2131717957 has 8 divisors (see below), whose sum is σ = 2145623040. Its totient is φ = 2117841840.

The previous prime is 2131717949. The next prime is 2131717969. The reversal of 2131717957 is 7597171312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131717957 - 2³ = 2131717949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131717997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151608 + ... + 165070.

It is an arithmetic number, because the mean of its divisors is an integer number (268202880).

Almost surely, 2^2131717957 is an apocalyptic number.

It is an amenable number.

2131717957 is a deficient number, since it is larger than the sum of its proper divisors (13905083).

2131717957 is a wasteful number, since it uses less digits than its factorization.

2131717957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14483.

The product of its digits is 92610, while the sum is 43.

The square root of 2131717957 is about 46170.5312618341. The cubic root of 2131717957 is about 1286.9941747821.

The spelling of 2131717957 in words is "two billion, one hundred thirty-one million, seven hundred seventeen thousand, nine hundred fifty-seven".