2631471697 has 2 divisors, whose sum is σ = 2631471698. Its totient is φ = 2631471696.

The previous prime is 2631471691. The next prime is 2631471727. The reversal of 2631471697 is 7961741362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2507906241 + 123565456 = 50079^2 + 11116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2631471697 is a prime.

It is a super-2 number, since 2×2631471697² = 13849286584224119618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2631471691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315735848 + 1315735849.

It is an arithmetic number, because the mean of its divisors is an integer number (1315735849).

Almost surely, 2^2631471697 is an apocalyptic number.

It is an amenable number.

2631471697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2631471697 is an equidigital number, since it uses as much as digits as its factorization.

2631471697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 2631471697 is about 51297.8722463223. The cubic root of 2631471697 is about 1380.5948036290.

The spelling of 2631471697 in words is "two billion, six hundred thirty-one million, four hundred seventy-one thousand, six hundred ninety-seven".