101131 has 4 divisors (see below), whose sum is σ = 105552. Its totient is φ = 96712.

The previous prime is 101119. The next prime is 101141. The reversal of 101131 is 131101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101131 - 2¹¹ = 99083 is a prime.

It is a super-2 number, since 2×101131² = 20454958322, which contains 22 as substring.

It is a Duffinian number.

101131 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (101111) 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, 2176 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (26388).

2¹⁰¹¹³¹ is an apocalyptic number.

101131 is a deficient number, since it is larger than the sum of its proper divisors (4421).

101131 is an equidigital number, since it uses as much as digits as its factorization.

101131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420.

The product of its (nonzero) digits is 3, while the sum is 7.

The square root of 101131 is about 318.0110060988. The cubic root of 101131 is about 46.5902206449.

Adding to 101131 its reverse (131101), we get a palindrome (232232).

It can be divided in two parts, 101 and 131, that multiplied together give a palindrome (13231).

The spelling of 101131 in words is "one hundred one thousand, one hundred thirty-one".