31152225113 has 4 divisors (see below), whose sum is σ = 31154327568. Its totient is φ = 31150122660.

The previous prime is 31152225109. The next prime is 31152225151.

31152225113 is nontrivially palindromic in base 10.

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 31152225113 - 2² = 31152225109 is a prime.

It is a super-2 number, since 2×31152225113² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31152225163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028843 + ... + 1058688.

It is an arithmetic number, because the mean of its divisors is an integer number (7788581892).

Almost surely, 2^31152225113 is an apocalyptic number.

It is an amenable number.

31152225113 is a deficient number, since it is larger than the sum of its proper divisors (2102455).

31152225113 is a wasteful number, since it uses less digits than its factorization.

31152225113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102454.

The product of its digits is 1800, while the sum is 26.

The spelling of 31152225113 in words is "thirty-one billion, one hundred fifty-two million, two hundred twenty-five thousand, one hundred thirteen".