813240373 has 16 divisors (see below), whose sum is σ = 944317440. Its totient is φ = 692147200.

The previous prime is 813240347. The next prime is 813240383. The reversal of 813240373 is 373042318.

It is a cyclic number.

It is not a de Polignac number, because 813240373 - 2²⁹ = 276369461 is a prime.

It is a super-2 number, since 2×813240373² = 1322719808554358258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813240383) 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, 24333 + ... + 47101.

It is an arithmetic number, because the mean of its divisors is an integer number (59019840).

Almost surely, 2^813240373 is an apocalyptic number.

It is an amenable number.

813240373 is a deficient number, since it is larger than the sum of its proper divisors (131077067).

813240373 is a wasteful number, since it uses less digits than its factorization.

813240373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22988.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 813240373 is about 28517.3696718333. The cubic root of 813240373 is about 933.4111339765.

The spelling of 813240373 in words is "eight hundred thirteen million, two hundred forty thousand, three hundred seventy-three".