31601743012 has 48 divisors (see below), whose sum is σ = 64487549952. Its totient is φ = 13270793760.

The previous prime is 31601743001. The next prime is 31601743013. The reversal of 31601743012 is 21034710613.

It is a super-2 number, since 2×31601743012² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (31601743013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275283 + ... + 372805.

It is an arithmetic number, because the mean of its divisors is an integer number (1343490624).

Almost surely, 2^31601743012 is an apocalyptic number.

It is an amenable number.

31601743012 is an abundant number, since it is smaller than the sum of its proper divisors (32885806940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31601743012 is a wasteful number, since it uses less digits than its factorization.

31601743012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97768 (or 97766 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 31601743012 in words is "thirty-one billion, six hundred one million, seven hundred forty-three thousand, twelve".