31474693186 has 8 divisors (see below), whose sum is σ = 47220948540. Its totient is φ = 15734377008.

The previous prime is 31474693169. The next prime is 31474693249. The reversal of 31474693186 is 68139647413.

It can be written as a sum of positive squares in 2 ways, for example, as 30614150961 + 860542225 = 174969^2 + 29335^2 .

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

It is a super-2 number, since 2×31474693186² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1471521 + ... + 1492756.

Almost surely, 2^31474693186 is an apocalyptic number.

31474693186 is a deficient number, since it is larger than the sum of its proper divisors (15746255354).

31474693186 is a wasteful number, since it uses less digits than its factorization.

31474693186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969588.

The product of its digits is 2612736, while the sum is 52.

The spelling of 31474693186 in words is "thirty-one billion, four hundred seventy-four million, six hundred ninety-three thousand, one hundred eighty-six".