31241243012 has 36 divisors (see below), whose sum is σ = 66945528720. Its totient is φ = 12684412944.

The previous prime is 31241242979. The next prime is 31241243021. The reversal of 31241243012 is 21034214213.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4190858 + ... + 4198305.

It is an arithmetic number, because the mean of its divisors is an integer number (1859598020).

Almost surely, 2^31241243012 is an apocalyptic number.

It is an amenable number.

31241243012 is an abundant number, since it is smaller than the sum of its proper divisors (35704285708).

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

31241243012 is a wasteful number, since it uses less digits than its factorization.

31241243012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8389200 (or 8389191 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31241243012 its reverse (21034214213), we get a palindrome (52275457225).

The spelling of 31241243012 in words is "thirty-one billion, two hundred forty-one million, two hundred forty-three thousand, twelve".