73131430 has 8 divisors (see below), whose sum is σ = 131636592. Its totient is φ = 29252568.

The previous prime is 73131427. The next prime is 73131431. The reversal of 73131430 is 3413137.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73131431) 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, 3656562 + ... + 3656581.

It is an arithmetic number, because the mean of its divisors is an integer number (16454574).

Almost surely, 2^73131430 is an apocalyptic number.

73131430 is a deficient number, since it is larger than the sum of its proper divisors (58505162).

73131430 is a wasteful number, since it uses less digits than its factorization.

73131430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7313150.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 73131430 is about 8551.6916455167. The cubic root of 73131430 is about 418.1845868666.

Adding to 73131430 its reverse (3413137), we get a palindrome (76544567).

It can be divided in two parts, 73 and 131430, that multiplied together give a triangular number (9594390 = T₄₃₈₀).

The spelling of 73131430 in words is "seventy-three million, one hundred thirty-one thousand, four hundred thirty".