13231973 has 2 divisors, whose sum is σ = 13231974. Its totient is φ = 13231972.

The previous prime is 13231963. The next prime is 13231987. The reversal of 13231973 is 37913231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10975969 + 2256004 = 3313^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231973 - 2⁸ = 13231717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615986 + 6615987.

It is an arithmetic number, because the mean of its divisors is an integer number (6615987).

Almost surely, 2^13231973 is an apocalyptic number.

It is an amenable number.

13231973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231973 is an equidigital number, since it uses as much as digits as its factorization.

13231973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 29.

The square root of 13231973 is about 3637.5779029459. The cubic root of 13231973 is about 236.5238113832.

The spelling of 13231973 in words is "thirteen million, two hundred thirty-one thousand, nine hundred seventy-three".