121310 has 16 divisors (see below), whose sum is σ = 249696. Its totient is φ = 41568.

The previous prime is 121309. The next prime is 121313. The reversal of 121310 is 13121.

121310 = 41² + 42² + ... + 75².

It is a super-2 number, since 2×121310² = 29432232200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797 + ... + 936.

It is an arithmetic number, because the mean of its divisors is an integer number (15606).

2¹²¹³¹⁰ is an apocalyptic number.

121310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121310 is an abundant number, since it is smaller than the sum of its proper divisors (128386).

It is a weird number, because it is abundant, but not a pseudoperfect number.

121310 is a wasteful number, since it uses less digits than its factorization.

121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 121310 is about 348.2958512529. The cubic root of 121310 is about 49.5030777259.

Adding to 121310 its reverse (13121), we get a palindrome (134431).

The spelling of 121310 in words is "one hundred twenty-one thousand, three hundred ten", and thus it is an iban number.