3131440242432 has 72 divisors (see below), whose sum is σ = 8335363190784. Its totient is φ = 1043667446784.

The previous prime is 3131440242391. The next prime is 3131440242461. The reversal of 3131440242432 is 2342420441313.

It is a junction number, because it is equal to n+sod(n) for n = 3131440242393 and 3131440242402.

It is a congruent 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, 5281153 + ... + 5844095.

Almost surely, 2^{3131440242432} is an apocalyptic number.

3131440242432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3131440242432 is an abundant number, since it is smaller than the sum of its proper divisors (5203922948352).

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

3131440242432 is an equidigital number, since it uses as much as digits as its factorization.

3131440242432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570205 (or 570191 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 3131440242432 its reverse (2342420441313), we get a palindrome (5473860683745).

The spelling of 3131440242432 in words is "three trillion, one hundred thirty-one billion, four hundred forty million, two hundred forty-two thousand, four hundred thirty-two".