73945131 has 32 divisors (see below), whose sum is σ = 113379840. Its totient is φ = 42488064.

The previous prime is 73945127. The next prime is 73945133. The reversal of 73945131 is 13154937.

It is not a de Polignac number, because 73945131 - 2² = 73945127 is a prime.

It is a super-2 number, since 2×73945131² = 10935764797214322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73945092 and 73945101.

It is not an unprimeable number, because it can be changed into a prime (73945133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53410 + ... + 54776.

It is an arithmetic number, because the mean of its divisors is an integer number (3543120).

Almost surely, 2^73945131 is an apocalyptic number.

73945131 is a deficient number, since it is larger than the sum of its proper divisors (39434709).

73945131 is a wasteful number, since it uses less digits than its factorization.

73945131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475.

The product of its digits is 11340, while the sum is 33.

The square root of 73945131 is about 8599.1354798026. The cubic root of 73945131 is about 419.7298546235.

The spelling of 73945131 in words is "seventy-three million, nine hundred forty-five thousand, one hundred thirty-one".