31628232351 has 48 divisors (see below), whose sum is σ = 49460320000. Its totient is φ = 19971985968.

The previous prime is 31628232299. The next prime is 31628232373. The reversal of 31628232351 is 15323282613.

31628232351 is a `hidden beast` number, since 3 + 1 + 6 + 282 + 323 + 51 = 666.

It is not a de Polignac number, because 31628232351 - 2⁶ = 31628232287 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 (31628232451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1460400 + ... + 1481898.

Almost surely, 2^31628232351 is an apocalyptic number.

31628232351 is a deficient number, since it is larger than the sum of its proper divisors (17832087649).

31628232351 is a wasteful number, since it uses less digits than its factorization.

31628232351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21657 (or 21628 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 31628232351 in words is "thirty-one billion, six hundred twenty-eight million, two hundred thirty-two thousand, three hundred fifty-one".