31677049971 has 20 divisors (see below), whose sum is σ = 54080043952. Its totient is φ = 18101171088.

The previous prime is 31677049969. The next prime is 31677049973. The reversal of 31677049971 is 17994077613.

31677049971 is a `hidden beast` number, since 3 + 16 + 7 + 70 + 499 + 71 = 666.

It is an interprime number because it is at equal distance from previous prime (31677049969) and next prime (31677049973).

It is not a de Polignac number, because 31677049971 - 2¹ = 31677049969 is a prime.

It is a super-2 number, since 2×31677049971² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31677049973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27933340 + ... + 27934473.

Almost surely, 2^31677049971 is an apocalyptic number.

31677049971 is a deficient number, since it is larger than the sum of its proper divisors (22402993981).

31677049971 is an equidigital number, since it uses as much as digits as its factorization.

31677049971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55867832 (or 55867823 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 54.

The spelling of 31677049971 in words is "thirty-one billion, six hundred seventy-seven million, forty-nine thousand, nine hundred seventy-one".