731973213 has 16 divisors (see below), whose sum is σ = 1084924800. Its totient is φ = 487748160.

The previous prime is 731973181. The next prime is 731973217. The reversal of 731973213 is 312379137.

It is not a de Polignac number, because 731973213 - 2⁵ = 731973181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731973217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65248 + ... + 75638.

It is an arithmetic number, because the mean of its divisors is an integer number (67807800).

Almost surely, 2^731973213 is an apocalyptic number.

It is an amenable number.

731973213 is a deficient number, since it is larger than the sum of its proper divisors (352951587).

731973213 is a wasteful number, since it uses less digits than its factorization.

731973213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13009 (or 13003 counting only the distinct ones).

The product of its digits is 23814, while the sum is 36.

The square root of 731973213 is about 27055.0034744038. The cubic root of 731973213 is about 901.2218848021.

The spelling of 731973213 in words is "seven hundred thirty-one million, nine hundred seventy-three thousand, two hundred thirteen".