31331341140420 has 48 divisors (see below), whose sum is σ = 88596346845888. Its totient is φ = 8272301289600.

The previous prime is 31331341140397. The next prime is 31331341140427. The reversal of 31331341140420 is 2404114313313.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (31331341140427) 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, 2585088094 + ... + 2585100213.

It is an arithmetic number, because the mean of its divisors is an integer number (1845757225956).

Almost surely, 2^{31331341140420} is an apocalyptic number.

31331341140420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31331341140420 is an abundant number, since it is smaller than the sum of its proper divisors (57265005705468).

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

31331341140420 is a wasteful number, since it uses less digits than its factorization.

31331341140420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170188420 (or 5170188418 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 31331341140420 its reverse (2404114313313), we get a palindrome (33735455453733).

The spelling of 31331341140420 in words is "thirty-one trillion, three hundred thirty-one billion, three hundred forty-one million, one hundred forty thousand, four hundred twenty".