52031731 has 16 divisors (see below), whose sum is σ = 54987520. Its totient is φ = 49183200.

The previous prime is 52031723. The next prime is 52031737. The reversal of 52031731 is 13713025.

It is a cyclic number.

It is not a de Polignac number, because 52031731 - 2³ = 52031723 is a prime.

It is a super-2 number, since 2×52031731² = 5414602061712722, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (52031737) 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, 344506 + ... + 344656.

It is an arithmetic number, because the mean of its divisors is an integer number (3436720).

Almost surely, 2^52031731 is an apocalyptic number.

52031731 is a deficient number, since it is larger than the sum of its proper divisors (2955789).

52031731 is a wasteful number, since it uses less digits than its factorization.

52031731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 52031731 is about 7213.3023643821. The cubic root of 52031731 is about 373.3270209569.

Adding to 52031731 its reverse (13713025), we get a palindrome (65744756).

The spelling of 52031731 in words is "fifty-two million, thirty-one thousand, seven hundred thirty-one".