97886431 has 2 divisors, whose sum is σ = 97886432. Its totient is φ = 97886430.

The previous prime is 97886401. The next prime is 97886471. The reversal of 97886431 is 13468879.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97886431 - 2⁷ = 97886303 is a prime.

It is a super-2 number, since 2×97886431² = 19163506747835522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97886401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48943215 + 48943216.

It is an arithmetic number, because the mean of its divisors is an integer number (48943216).

Almost surely, 2^97886431 is an apocalyptic number.

97886431 is a deficient number, since it is larger than the sum of its proper divisors (1).

97886431 is an equidigital number, since it uses as much as digits as its factorization.

97886431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 97886431 is about 9893.7571730865. The cubic root of 97886431 is about 460.8654642291.

The spelling of 97886431 in words is "ninety-seven million, eight hundred eighty-six thousand, four hundred thirty-one".