397020723 has 24 divisors (see below), whose sum is σ = 588445200. Its totient is φ = 237895680.

The previous prime is 397020697. The next prime is 397020727. The reversal of 397020723 is 327020793.

It is not a de Polignac number, because 397020723 - 2⁸ = 397020467 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (397020727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26163 + ... + 38451.

It is an arithmetic number, because the mean of its divisors is an integer number (24518550).

Almost surely, 2^397020723 is an apocalyptic number.

397020723 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

397020723 is a deficient number, since it is larger than the sum of its proper divisors (191424477).

397020723 is a wasteful number, since it uses less digits than its factorization.

397020723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12403 (or 12392 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 397020723 is about 19925.3788671634. The cubic root of 397020723 is about 734.9724474840.

The spelling of 397020723 in words is "three hundred ninety-seven million, twenty thousand, seven hundred twenty-three".