13131490 has 16 divisors (see below), whose sum is σ = 24452280. Its totient is φ = 5071360.

The previous prime is 13131479. The next prime is 13131499. The reversal of 13131490 is 9413131.

13131490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12341169 + 790321 = 3513^2 + 889^2 .

It is not an unprimeable number, because it can be changed into a prime (13131499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22351 + ... + 22930.

Almost surely, 2^13131490 is an apocalyptic number.

13131490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13131490 is a deficient number, since it is larger than the sum of its proper divisors (11320790).

13131490 is a wasteful number, since it uses less digits than its factorization.

13131490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45317.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 13131490 is about 3623.7397809445. The cubic root of 13131490 is about 235.9235723983.

The spelling of 13131490 in words is "thirteen million, one hundred thirty-one thousand, four hundred ninety".