97028131507 has 2 divisors, whose sum is σ = 97028131508. Its totient is φ = 97028131506.

The previous prime is 97028131493. The next prime is 97028131523. The reversal of 97028131507 is 70513182079.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97028131507 is a prime.

It is not a weakly prime, because it can be changed into another prime (97028131807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48514065753 + 48514065754.

It is an arithmetic number, because the mean of its divisors is an integer number (48514065754).

Almost surely, 2^97028131507 is an apocalyptic number.

97028131507 is a deficient number, since it is larger than the sum of its proper divisors (1).

97028131507 is an equidigital number, since it uses as much as digits as its factorization.

97028131507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 97028131507 in words is "ninety-seven billion, twenty-eight million, one hundred thirty-one thousand, five hundred seven".