73130031 has 48 divisors (see below), whose sum is σ = 121779840. Its totient is φ = 41912640.

The previous prime is 73130027. The next prime is 73130051. The reversal of 73130031 is 13003137.

73130031 = T₅₈ + T₅₉ + ... + T₇₅₉.

It is not a de Polignac number, because 73130031 - 2² = 73130027 is a prime.

It is a super-2 number, since 2×73130031² = 10696002868121922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73129986 and 73130013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73130051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148696 + ... + 149186.

It is an arithmetic number, because the mean of its divisors is an integer number (2537080).

Almost surely, 2^73130031 is an apocalyptic number.

73130031 is a deficient number, since it is larger than the sum of its proper divisors (48649809).

73130031 is a wasteful number, since it uses less digits than its factorization.

73130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 18.

The square root of 73130031 is about 8551.6098484437. The cubic root of 73130031 is about 418.1819202340.

Adding to 73130031 its reverse (13003137), we get a palindrome (86133168).

The spelling of 73130031 in words is "seventy-three million, one hundred thirty thousand, thirty-one".