31240144133412 has 24 divisors (see below), whose sum is σ = 75407244460800. Its totient is φ = 10054299261216.

The previous prime is 31240144133399. The next prime is 31240144133447. The reversal of 31240144133412 is 21433144104213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44885264212 + ... + 44885264907.

It is an arithmetic number, because the mean of its divisors is an integer number (3141968519200).

Almost surely, 2^{31240144133412} is an apocalyptic number.

It is an amenable number.

31240144133412 is an abundant number, since it is smaller than the sum of its proper divisors (44167100327388).

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

31240144133412 is a wasteful number, since it uses less digits than its factorization.

31240144133412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89770529155 (or 89770529153 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 31240144133412 its reverse (21433144104213), we get a palindrome (52673288237625).

The spelling of 31240144133412 in words is "thirty-one trillion, two hundred forty billion, one hundred forty-four million, one hundred thirty-three thousand, four hundred twelve".