97281013 has 2 divisors, whose sum is σ = 97281014. Its totient is φ = 97281012.

The previous prime is 97281001. The next prime is 97281017. The reversal of 97281013 is 31018279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72301009 + 24980004 = 8503^2 + 4998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97281013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97281017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48640506 + 48640507.

It is an arithmetic number, because the mean of its divisors is an integer number (48640507).

Almost surely, 2^97281013 is an apocalyptic number.

It is an amenable number.

97281013 is a deficient number, since it is larger than the sum of its proper divisors (1).

97281013 is an equidigital number, since it uses as much as digits as its factorization.

97281013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 97281013 is about 9863.1137578353. The cubic root of 97281013 is about 459.9133627006.

The spelling of 97281013 in words is "ninety-seven million, two hundred eighty-one thousand, thirteen".