31201312043320 has 32 divisors (see below), whose sum is σ = 70566697980720. Its totient is φ = 12415858882560.

The previous prime is 31201312043287. The next prime is 31201312043353. The reversal of 31201312043320 is 2334021310213.

It is an interprime number because it is at equal distance from previous prime (31201312043287) and next prime (31201312043353).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2020802646 + ... + 2020818085.

Almost surely, 2^{31201312043320} is an apocalyptic number.

It is an amenable number.

31201312043320 is an abundant number, since it is smaller than the sum of its proper divisors (39365385937400).

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

31201312043320 is a wasteful number, since it uses less digits than its factorization.

31201312043320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041620935 (or 4041620931 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31201312043320 its reverse (2334021310213), we get a palindrome (33535333353533).

The spelling of 31201312043320 in words is "thirty-one trillion, two hundred one billion, three hundred twelve million, forty-three thousand, three hundred twenty".