97730131 has 2 divisors, whose sum is σ = 97730132. Its totient is φ = 97730130.

The previous prime is 97730117. The next prime is 97730147. The reversal of 97730131 is 13103779.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97730131 is a prime.

It is a super-2 number, since 2×97730131² = 19102357010554322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97730093 and 97730102.

It is not a weakly prime, because it can be changed into another prime (97700131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48865065 + 48865066.

It is an arithmetic number, because the mean of its divisors is an integer number (48865066).

Almost surely, 2^97730131 is an apocalyptic number.

97730131 is a deficient number, since it is larger than the sum of its proper divisors (1).

97730131 is an equidigital number, since it uses as much as digits as its factorization.

97730131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969, while the sum is 31.

The square root of 97730131 is about 9885.8550970566. The cubic root of 97730131 is about 460.6200381606.

The spelling of 97730131 in words is "ninety-seven million, seven hundred thirty thousand, one hundred thirty-one".