1210313131 has 4 divisors (see below), whose sum is σ = 1238459992. Its totient is φ = 1182166272.

The previous prime is 1210313123. The next prime is 1210313149. The reversal of 1210313131 is 1313130121.

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 1210313131 - 2³ = 1210313123 is a prime.

It is a super-2 number, since 2×1210313131² = 2929715750142046322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210313161) 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, 14073366 + ... + 14073451.

It is an arithmetic number, because the mean of its divisors is an integer number (309614998).

Almost surely, 2^1210313131 is an apocalyptic number.

1210313131 is a deficient number, since it is larger than the sum of its proper divisors (28146861).

1210313131 is an equidigital number, since it uses as much as digits as its factorization.

1210313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28146860.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1210313131 is about 34789.5549123584. The cubic root of 1210313131 is about 1065.6941498010.

Adding to 1210313131 its reverse (1313130121), we get a palindrome (2523443252).

The spelling of 1210313131 in words is "one billion, two hundred ten million, three hundred thirteen thousand, one hundred thirty-one".