73488431 has 2 divisors, whose sum is σ = 73488432. Its totient is φ = 73488430.

The previous prime is 73488413. The next prime is 73488487. The reversal of 73488431 is 13488437.

Together with previous prime (73488413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73488431 is a prime.

It is a super-2 number, since 2×73488431² = 10801098981683522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73488491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36744215 + 36744216.

It is an arithmetic number, because the mean of its divisors is an integer number (36744216).

Almost surely, 2^73488431 is an apocalyptic number.

73488431 is a deficient number, since it is larger than the sum of its proper divisors (1).

73488431 is an equidigital number, since it uses as much as digits as its factorization.

73488431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 73488431 is about 8572.5393554069. The cubic root of 73488431 is about 418.8639575200.

The spelling of 73488431 in words is "seventy-three million, four hundred eighty-eight thousand, four hundred thirty-one".