72329031 has 10 divisors (see below), whose sum is σ = 108047192. Its totient is φ = 48219300.

The previous prime is 72329011. The next prime is 72329039. The reversal of 72329031 is 13092327.

It is not a de Polignac number, because 72329031 - 2⁷ = 72328903 is a prime.

It is a super-2 number, since 2×72329031² = 10462977450797922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72328986 and 72329004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72329039) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 446395 + ... + 446556.

Almost surely, 2^72329031 is an apocalyptic number.

72329031 is a deficient number, since it is larger than the sum of its proper divisors (35718161).

72329031 is an equidigital number, since it uses as much as digits as its factorization.

72329031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892963 (or 892954 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 72329031 is about 8504.6476117474. The cubic root of 72329031 is about 416.6495165919.

The spelling of 72329031 in words is "seventy-two million, three hundred twenty-nine thousand, thirty-one".