73131402 has 8 divisors (see below), whose sum is σ = 146262816. Its totient is φ = 24377132.

The previous prime is 73131353. The next prime is 73131403. The reversal of 73131402 is 20413137.

It is a sphenic number, since it is the product of 3 distinct primes.

73131402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (73131403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6094278 + ... + 6094289.

It is an arithmetic number, because the mean of its divisors is an integer number (18282852).

Almost surely, 2^73131402 is an apocalyptic number.

73131402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73131402 is a wasteful number, since it uses less digits than its factorization.

73131402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12188572.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 73131402 is about 8551.6900084135. The cubic root of 73131402 is about 418.1845334961.

Adding to 73131402 its reverse (20413137), we get a palindrome (93544539).

The spelling of 73131402 in words is "seventy-three million, one hundred thirty-one thousand, four hundred two".