31211201010313 has 4 divisors (see below), whose sum is σ = 31211501768208. Its totient is φ = 31210900252420.

The previous prime is 31211201010263. The next prime is 31211201010347. The reversal of 31211201010313 is 31301010211213.

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.

It is a cyclic number.

It is not a de Polignac number, because 31211201010313 - 2²⁹ = 31210664139401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31211201010413) 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, 150223231 + ... + 150430852.

It is an arithmetic number, because the mean of its divisors is an integer number (7802875442052).

Almost surely, 2^{31211201010313} is an apocalyptic number.

It is an amenable number.

31211201010313 is a deficient number, since it is larger than the sum of its proper divisors (300757895).

31211201010313 is a wasteful number, since it uses less digits than its factorization.

31211201010313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300757894.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31211201010313 its reverse (31301010211213), we get a palindrome (62512211221526).

The spelling of 31211201010313 in words is "thirty-one trillion, two hundred eleven billion, two hundred one million, ten thousand, three hundred thirteen".