31690352631 has 8 divisors (see below), whose sum is σ = 48290061184. Its totient is φ = 18108772920.

The previous prime is 31690352621. The next prime is 31690352641. The reversal of 31690352631 is 13625309613.

It is an interprime number because it is at equal distance from previous prime (31690352621) and next prime (31690352641).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31690352631 - 2¹¹ = 31690350583 is a prime.

It is a super-2 number, since 2×31690352631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31690352631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31690352621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754532185 + ... + 754532226.

It is an arithmetic number, because the mean of its divisors is an integer number (6036257648).

Almost surely, 2^31690352631 is an apocalyptic number.

31690352631 is a deficient number, since it is larger than the sum of its proper divisors (16599708553).

31690352631 is a wasteful number, since it uses less digits than its factorization.

31690352631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509064421.

The product of its (nonzero) digits is 87480, while the sum is 39.

The spelling of 31690352631 in words is "thirty-one billion, six hundred ninety million, three hundred fifty-two thousand, six hundred thirty-one".