31413320023420 has 24 divisors (see below), whose sum is σ = 65968110687024. Its totient is φ = 12565301602176.

The previous prime is 31413320023391. The next prime is 31413320023433. The reversal of 31413320023420 is 2432002331413.

It is a happy number.

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, 10168272 + ... + 12892648.

It is an arithmetic number, because the mean of its divisors is an integer number (2748671278626).

Almost surely, 2^{31413320023420} is an apocalyptic number.

It is an amenable number.

31413320023420 is an abundant number, since it is smaller than the sum of its proper divisors (34554790663604).

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

31413320023420 is a wasteful number, since it uses less digits than its factorization.

31413320023420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300909 (or 3300907 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 31413320023420 its reverse (2432002331413), we get a palindrome (33845322354833).

The spelling of 31413320023420 in words is "thirty-one trillion, four hundred thirteen billion, three hundred twenty million, twenty-three thousand, four hundred twenty".