31113400123311 has 16 divisors (see below), whose sum is σ = 45268678882560. Its totient is φ = 18851262736320.

The previous prime is 31113400123279. The next prime is 31113400123327. The reversal of 31113400123311 is 11332100431113.

It is not a de Polignac number, because 31113400123311 - 2⁵ = 31113400123279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113400123511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133466755 + ... + 133699668.

It is an arithmetic number, because the mean of its divisors is an integer number (2829292430160).

Almost surely, 2^{31113400123311} is an apocalyptic number.

31113400123311 is a deficient number, since it is larger than the sum of its proper divisors (14155278759249).

31113400123311 is a wasteful number, since it uses less digits than its factorization.

31113400123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267169966.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31113400123311 its reverse (11332100431113), we get a palindrome (42445500554424).

The spelling of 31113400123311 in words is "thirty-one trillion, one hundred thirteen billion, four hundred million, one hundred twenty-three thousand, three hundred eleven".