313111223030402 has 4 divisors (see below), whose sum is σ = 469666834545606. Its totient is φ = 156555611515200.

The previous prime is 313111223030381. The next prime is 313111223030407. The reversal of 313111223030402 is 204030322111313.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 305268652419721 + 7842570610681 = 17471939^2 + 2800459^2 .

It is not an unprimeable number, because it can be changed into a prime (313111223030407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78277805757599 + ... + 78277805757602.

Almost surely, 2^{313111223030402} is an apocalyptic number.

313111223030402 is a deficient number, since it is larger than the sum of its proper divisors (156555611515204).

313111223030402 is a wasteful number, since it uses less digits than its factorization.

313111223030402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156555611515203.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 313111223030402 its reverse (204030322111313), we get a palindrome (517141545141715).

The spelling of 313111223030402 in words is "three hundred thirteen trillion, one hundred eleven billion, two hundred twenty-three million, thirty thousand, four hundred two".