531073397 has 16 divisors (see below), whose sum is σ = 548127360. Its totient is φ = 514382400.

The previous prime is 531073393. The next prime is 531073441. The reversal of 531073397 is 793370135.

It is a cyclic number.

It is not a de Polignac number, because 531073397 - 2² = 531073393 is a prime.

It is a super-2 number, since 2×531073397² = 564077906002239218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531073397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531073391) 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, 1261247 + ... + 1261667.

It is an arithmetic number, because the mean of its divisors is an integer number (34257960).

Almost surely, 2^531073397 is an apocalyptic number.

It is an amenable number.

531073397 is a deficient number, since it is larger than the sum of its proper divisors (17053963).

531073397 is a wasteful number, since it uses less digits than its factorization.

531073397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764.

The product of its (nonzero) digits is 59535, while the sum is 38.

The square root of 531073397 is about 23045.0297678263. The cubic root of 531073397 is about 809.8131952493.

The spelling of 531073397 in words is "five hundred thirty-one million, seventy-three thousand, three hundred ninety-seven".