31318928151 has 24 divisors (see below), whose sum is σ = 48761057664. Its totient is φ = 17828460720.

The previous prime is 31318928099. The next prime is 31318928153. The reversal of 31318928151 is 15182981313.

It is not a de Polignac number, because 31318928151 - 2¹³ = 31318919959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31318928153) 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, 366385 + ... + 443706.

It is an arithmetic number, because the mean of its divisors is an integer number (2031710736).

Almost surely, 2^31318928151 is an apocalyptic number.

31318928151 is a deficient number, since it is larger than the sum of its proper divisors (17442129513).

31318928151 is a wasteful number, since it uses less digits than its factorization.

31318928151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810371 (or 810364 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The spelling of 31318928151 in words is "thirty-one billion, three hundred eighteen million, nine hundred twenty-eight thousand, one hundred fifty-one".