97431379 has 2 divisors, whose sum is σ = 97431380. Its totient is φ = 97431378.

The previous prime is 97431349. The next prime is 97431401. The reversal of 97431379 is 97313479.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97431379 - 2⁷ = 97431251 is a prime.

It is a super-2 number, since 2×97431379² = 18985747227683282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97431349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48715689 + 48715690.

It is an arithmetic number, because the mean of its divisors is an integer number (48715690).

Almost surely, 2^97431379 is an apocalyptic number.

97431379 is a deficient number, since it is larger than the sum of its proper divisors (1).

97431379 is an equidigital number, since it uses as much as digits as its factorization.

97431379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 97431379 is about 9870.7334580567. The cubic root of 97431379 is about 460.1502014228.

The spelling of 97431379 in words is "ninety-seven million, four hundred thirty-one thousand, three hundred seventy-nine".