31123432115 has 8 divisors (see below), whose sum is σ = 37350716640. Its totient is φ = 24897013632.

The previous prime is 31123432103. The next prime is 31123432177. The reversal of 31123432115 is 51123432113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31123432115 - 2²⁸ = 30854996659 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134630 + ... + 283499.

It is an arithmetic number, because the mean of its divisors is an integer number (4668839580).

Almost surely, 2^31123432115 is an apocalyptic number.

31123432115 is a deficient number, since it is larger than the sum of its proper divisors (6227284525).

31123432115 is a wasteful number, since it uses less digits than its factorization.

31123432115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433021.

The product of its digits is 2160, while the sum is 26.

Adding to 31123432115 its reverse (51123432113), we get a palindrome (82246864228).

The spelling of 31123432115 in words is "thirty-one billion, one hundred twenty-three million, four hundred thirty-two thousand, one hundred fifteen".