13031772 has 24 divisors (see below), whose sum is σ = 32746896. Its totient is φ = 4009728.

The previous prime is 13031771. The next prime is 13031779. The reversal of 13031772 is 27713031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41613 + ... + 41924.

It is an arithmetic number, because the mean of its divisors is an integer number (1364454).

Almost surely, 2^13031772 is an apocalyptic number.

13031772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13031772 is an abundant number, since it is smaller than the sum of its proper divisors (19715124).

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

13031772 is a wasteful number, since it uses less digits than its factorization.

13031772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83557 (or 83555 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 13031772 is about 3609.9545703513. The cubic root of 13031772 is about 235.3248683290.

The spelling of 13031772 in words is "thirteen million, thirty-one thousand, seven hundred seventy-two".