97280431 has 2 divisors, whose sum is σ = 97280432. Its totient is φ = 97280430.

The previous prime is 97280389. The next prime is 97280503. The reversal of 97280431 is 13408279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97280431 - 2¹³ = 97272239 is a prime.

It is a super-2 number, since 2×97280431² = 18926964511091522, which contains 22 as substring.

It is equal to p_5613739 and since 97280431 and 5613739 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97980431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48640215 + 48640216.

It is an arithmetic number, because the mean of its divisors is an integer number (48640216).

Almost surely, 2^97280431 is an apocalyptic number.

97280431 is a deficient number, since it is larger than the sum of its proper divisors (1).

97280431 is an equidigital number, since it uses as much as digits as its factorization.

97280431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 97280431 is about 9863.0842539238. The cubic root of 97280431 is about 459.9124455291.

The spelling of 97280431 in words is "ninety-seven million, two hundred eighty thousand, four hundred thirty-one".