13031982 has 16 divisors (see below), whose sum is σ = 28960080. Its totient is φ = 4343976.

The previous prime is 13031981. The next prime is 13031983. The reversal of 13031982 is 28913031.

It is an interprime number because it is at equal distance from previous prime (13031981) and next prime (13031983).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031981) 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, 120613 + ... + 120720.

It is an arithmetic number, because the mean of its divisors is an integer number (1810005).

Almost surely, 2^13031982 is an apocalyptic number.

13031982 is an abundant number, since it is smaller than the sum of its proper divisors (15928098).

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

13031982 is a wasteful number, since it uses less digits than its factorization.

13031982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241344 (or 241338 counting only the distinct ones).

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

The square root of 13031982 is about 3609.9836564727. The cubic root of 13031982 is about 235.3261323668.

The spelling of 13031982 in words is "thirteen million, thirty-one thousand, nine hundred eighty-two".