13231790 has 64 divisors (see below), whose sum is σ = 29514240. Its totient is φ = 4199040.

The previous prime is 13231787. The next prime is 13231811. The reversal of 13231790 is 9713231.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 26927 + ... + 27413.

It is an arithmetic number, because the mean of its divisors is an integer number (461160).

Almost surely, 2^13231790 is an apocalyptic number.

13231790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13231790 is an abundant number, since it is smaller than the sum of its proper divisors (16282450).

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

13231790 is a wasteful number, since it uses less digits than its factorization.

13231790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 13231790 is about 3637.5527487584. The cubic root of 13231790 is about 236.5227209926.

It can be divided in two parts, 1323 and 1790, that added together give a palindrome (3113).

The spelling of 13231790 in words is "thirteen million, two hundred thirty-one thousand, seven hundred ninety".