3147997057 has 4 divisors (see below), whose sum is σ = 3151662640. Its totient is φ = 3144331476.

The previous prime is 3147997043. The next prime is 3147997087. The reversal of 3147997057 is 7507997413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3147997057 is a prime.

It is a super-2 number, since 2×3147997057² = 19819770941761322498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3147996995 and 3147997013.

It is not an unprimeable number, because it can be changed into a prime (3147997087) 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 in 3 ways as a sum of consecutive naturals, for example, 1831503 + ... + 1833220.

It is an arithmetic number, because the mean of its divisors is an integer number (787915660).

Almost surely, 2^3147997057 is an apocalyptic number.

It is an amenable number.

3147997057 is a deficient number, since it is larger than the sum of its proper divisors (3665583).

3147997057 is an equidigital number, since it uses as much as digits as its factorization.

3147997057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665582.

The product of its (nonzero) digits is 1666980, while the sum is 52.

The square root of 3147997057 is about 56107.0143297609. The cubic root of 3147997057 is about 1465.5864436839.

The spelling of 3147997057 in words is "three billion, one hundred forty-seven million, nine hundred ninety-seven thousand, fifty-seven".