31055413440 has 56 divisors (see below), whose sum is σ = 98600940720. Its totient is φ = 8281443328.

The previous prime is 31055413427. The next prime is 31055413457. The reversal of 31055413440 is 4431455013.

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

It is a junction number, because it is equal to n+sod(n) for n = 31055413398 and 31055413407.

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, 16173735 + ... + 16175654.

Almost surely, 2^31055413440 is an apocalyptic number.

31055413440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31055413440 is an abundant number, since it is smaller than the sum of its proper divisors (67545527280).

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

31055413440 is a wasteful number, since it uses less digits than its factorization.

31055413440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32349409 (or 32349399 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 31055413440 its reverse (4431455013), we get a palindrome (35486868453).

The spelling of 31055413440 in words is "thirty-one billion, fifty-five million, four hundred thirteen thousand, four hundred forty".