31331307126 has 16 divisors (see below), whose sum is σ = 71614416384. Its totient is φ = 8951802024.

The previous prime is 31331307109. The next prime is 31331307149. The reversal of 31331307126 is 62170313313.

It is a junction number, because it is equal to n+sod(n) for n = 31331307093 and 31331307102.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 372991710 + ... + 372991793.

It is an arithmetic number, because the mean of its divisors is an integer number (4475901024).

Almost surely, 2^31331307126 is an apocalyptic number.

31331307126 is an abundant number, since it is smaller than the sum of its proper divisors (40283109258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31331307126 is a wasteful number, since it uses less digits than its factorization.

31331307126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745983515.

The product of its (nonzero) digits is 6804, while the sum is 30.

The spelling of 31331307126 in words is "thirty-one billion, three hundred thirty-one million, three hundred seven thousand, one hundred twenty-six".