97431307 has 4 divisors (see below), whose sum is σ = 98014896. Its totient is φ = 96847720.

The previous prime is 97431287. The next prime is 97431317. The reversal of 97431307 is 70313479.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97431307 - 2⁷ = 97431179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97431317) 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, 291544 + ... + 291877.

It is an arithmetic number, because the mean of its divisors is an integer number (24503724).

Almost surely, 2^97431307 is an apocalyptic number.

97431307 is a deficient number, since it is larger than the sum of its proper divisors (583589).

97431307 is a wasteful number, since it uses less digits than its factorization.

97431307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583588.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 97431307 is about 9870.7298109106. The cubic root of 97431307 is about 460.1500880752.

The spelling of 97431307 in words is "ninety-seven million, four hundred thirty-one thousand, three hundred seven".