101312213 has 4 divisors (see below), whose sum is σ = 103467840. Its totient is φ = 99156588.

The previous prime is 101312209. The next prime is 101312261. The reversal of 101312213 is 312213101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312213101 = 29 ⋅10765969.

It is a cyclic number.

It is not a de Polignac number, because 101312213 - 2² = 101312209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101312273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1077743 + ... + 1077836.

It is an arithmetic number, because the mean of its divisors is an integer number (25866960).

Almost surely, 2^101312213 is an apocalyptic number.

It is an amenable number.

101312213 is a deficient number, since it is larger than the sum of its proper divisors (2155627).

101312213 is an equidigital number, since it uses as much as digits as its factorization.

101312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155626.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 101312213 is about 10065.3968128435. The cubic root of 101312213 is about 466.1803182024.

Adding to 101312213 its reverse (312213101), we get a palindrome (413525314).

It can be divided in two parts, 101 and 312213, that multiplied together give a palindrome (31533513).

The spelling of 101312213 in words is "one hundred one million, three hundred twelve thousand, two hundred thirteen".