31474947513 has 8 divisors (see below), whose sum is σ = 42103296928. Its totient is φ = 20914948224.

The previous prime is 31474947487. The next prime is 31474947547. The reversal of 31474947513 is 31574947413.

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

It is not a de Polignac number, because 31474947513 - 2⁵ = 31474947481 is a prime.

It is a super-2 number, since 2×31474947513² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31474947593) 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, 17086456 + ... + 17088297.

It is an arithmetic number, because the mean of its divisors is an integer number (5262912116).

Almost surely, 2^31474947513 is an apocalyptic number.

It is an amenable number.

31474947513 is a deficient number, since it is larger than the sum of its proper divisors (10628349415).

31474947513 is a wasteful number, since it uses less digits than its factorization.

31474947513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34175063.

The product of its digits is 1270080, while the sum is 48.

The spelling of 31474947513 in words is "thirty-one billion, four hundred seventy-four million, nine hundred forty-seven thousand, five hundred thirteen".