31131400311 has 24 divisors (see below), whose sum is σ = 49065803280. Its totient is φ = 18863568000.

The previous prime is 31131400291. The next prime is 31131400337. The reversal of 31131400311 is 11300413113.

31131400311 is a `hidden beast` number, since 311 + 3 + 1 + 40 + 0 + 311 = 666.

It is not a de Polignac number, because 31131400311 - 2⁹ = 31131399799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31131440311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 483411 + ... + 544011.

It is an arithmetic number, because the mean of its divisors is an integer number (2044408470).

Almost surely, 2^31131400311 is an apocalyptic number.

31131400311 is a deficient number, since it is larger than the sum of its proper divisors (17934402969).

31131400311 is a wasteful number, since it uses less digits than its factorization.

31131400311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65807 (or 65804 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31131400311 its reverse (11300413113), we get a palindrome (42431813424).

The spelling of 31131400311 in words is "thirty-one billion, one hundred thirty-one million, four hundred thousand, three hundred eleven".