315032511222131 has 4 divisors (see below), whose sum is σ = 315032776074072. Its totient is φ = 315032246370192.

The previous prime is 315032511222127. The next prime is 315032511222133. The reversal of 315032511222131 is 131222115230513.

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 315032511222131 - 2² = 315032511222127 is a prime.

It is a super-2 number, since 2×315032511222131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315032511222133) 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, 130633685 + ... + 133023398.

It is an arithmetic number, because the mean of its divisors is an integer number (78758194018518).

Almost surely, 2^{315032511222131} is an apocalyptic number.

315032511222131 is a deficient number, since it is larger than the sum of its proper divisors (264851941).

315032511222131 is a wasteful number, since it uses less digits than its factorization.

315032511222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264851940.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 315032511222131 its reverse (131222115230513), we get a palindrome (446254626452644).

The spelling of 315032511222131 in words is "three hundred fifteen trillion, thirty-two billion, five hundred eleven million, two hundred twenty-two thousand, one hundred thirty-one".