31429156157 has 24 divisors (see below), whose sum is σ = 37362093696. Its totient is φ = 25896780000.

The previous prime is 31429156153. The next prime is 31429156183. The reversal of 31429156157 is 75165192413.

It is not a de Polignac number, because 31429156157 - 2² = 31429156153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31429156153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1000307 + ... + 1031247.

It is an arithmetic number, because the mean of its divisors is an integer number (1556753904).

Almost surely, 2^31429156157 is an apocalyptic number.

It is an amenable number.

31429156157 is a deficient number, since it is larger than the sum of its proper divisors (5932937539).

31429156157 is a wasteful number, since it uses less digits than its factorization.

31429156157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31161 (or 31130 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The spelling of 31429156157 in words is "thirty-one billion, four hundred twenty-nine million, one hundred fifty-six thousand, one hundred fifty-seven".