1390131232 has 24 divisors (see below), whose sum is σ = 3127795776. Its totient is φ = 595770432.

The previous prime is 1390131221. The next prime is 1390131241. The reversal of 1390131232 is 2321310931.

It is a junction number, because it is equal to n+sod(n) for n = 1390131197 and 1390131206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3102748 + ... + 3103195.

It is an arithmetic number, because the mean of its divisors is an integer number (130324824).

Almost surely, 2^1390131232 is an apocalyptic number.

It is an amenable number.

1390131232 is an abundant number, since it is smaller than the sum of its proper divisors (1737664544).

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

1390131232 is an equidigital number, since it uses as much as digits as its factorization.

1390131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205960 (or 6205952 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1390131232 is about 37284.4636812708. The cubic root of 1390131232 is about 1116.0541504966.

The spelling of 1390131232 in words is "one billion, three hundred ninety million, one hundred thirty-one thousand, two hundred thirty-two".