920131380 has 96 divisors (see below), whose sum is σ = 3271591680. Its totient is φ = 210314880.

The previous prime is 920131363. The next prime is 920131391. The reversal of 920131380 is 83131029.

920131380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117931 + ... + 125490.

It is an arithmetic number, because the mean of its divisors is an integer number (34079080).

Almost surely, 2^920131380 is an apocalyptic number.

920131380 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

920131380 is an abundant number, since it is smaller than the sum of its proper divisors (2351460300).

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

920131380 is a wasteful number, since it uses less digits than its factorization.

920131380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243446 (or 243438 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 920131380 is about 30333.6674340575. The cubic root of 920131380 is about 972.6351206529.

The spelling of 920131380 in words is "nine hundred twenty million, one hundred thirty-one thousand, three hundred eighty".