31420804352 has 72 divisors (see below), whose sum is σ = 71730762432. Its totient is φ = 13456281600.

The previous prime is 31420804309. The next prime is 31420804423. The reversal of 31420804352 is 25340802413.

It is a super-2 number, since 2×31420804352² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 2809652 + ... + 2820812.

Almost surely, 2^31420804352 is an apocalyptic number.

31420804352 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31420804352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35865381216).

31420804352 is an abundant number, since it is smaller than the sum of its proper divisors (40309958080).

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

31420804352 is a wasteful number, since it uses less digits than its factorization.

31420804352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12755 (or 12741 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 31420804352 in words is "thirty-one billion, four hundred twenty million, eight hundred four thousand, three hundred fifty-two".