97611131 has 2 divisors, whose sum is σ = 97611132. Its totient is φ = 97611130.

The previous prime is 97611121. The next prime is 97611133. The reversal of 97611131 is 13111679.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97611131 - 2⁶ = 97611067 is a prime.

It is a super-2 number, since 2×97611131² = 19055865790198322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 97611133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97611094 and 97611103.

It is not a weakly prime, because it can be changed into another prime (97611133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48805565 + 48805566.

It is an arithmetic number, because the mean of its divisors is an integer number (48805566).

Almost surely, 2^97611131 is an apocalyptic number.

97611131 is a deficient number, since it is larger than the sum of its proper divisors (1).

97611131 is an equidigital number, since it uses as much as digits as its factorization.

97611131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 29.

The square root of 97611131 is about 9879.8345633922. The cubic root of 97611131 is about 460.4330059497.

The spelling of 97611131 in words is "ninety-seven million, six hundred eleven thousand, one hundred thirty-one".