97257431 has 2 divisors, whose sum is σ = 97257432. Its totient is φ = 97257430.

The previous prime is 97257421. The next prime is 97257437. The reversal of 97257431 is 13475279.

It is a strong prime.

It is an emirp because it is prime and its reverse (13475279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97257431 - 2¹⁴ = 97241047 is a prime.

It is a super-2 number, since 2×97257431² = 18918015769439522, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97257437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48628715 + 48628716.

It is an arithmetic number, because the mean of its divisors is an integer number (48628716).

Almost surely, 2^97257431 is an apocalyptic number.

97257431 is a deficient number, since it is larger than the sum of its proper divisors (1).

97257431 is an equidigital number, since it uses as much as digits as its factorization.

97257431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The square root of 97257431 is about 9861.9182211170. The cubic root of 97257431 is about 459.8761969918.

The spelling of 97257431 in words is "ninety-seven million, two hundred fifty-seven thousand, four hundred thirty-one".