31040321115 has 32 divisors (see below), whose sum is σ = 49911681600. Its totient is φ = 16472641536.

The previous prime is 31040321101. The next prime is 31040321141. The reversal of 31040321115 is 51112304013.

It is not a de Polignac number, because 31040321115 - 2¹⁸ = 31040058971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31040321091 and 31040321100.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2778561 + ... + 2789709.

It is an arithmetic number, because the mean of its divisors is an integer number (1559740050).

Almost surely, 2^31040321115 is an apocalyptic number.

31040321115 is a deficient number, since it is larger than the sum of its proper divisors (18871360485).

31040321115 is a wasteful number, since it uses less digits than its factorization.

31040321115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12063.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 31040321115 its reverse (51112304013), we get a palindrome (82152625128).

The spelling of 31040321115 in words is "thirty-one billion, forty million, three hundred twenty-one thousand, one hundred fifteen".