2115972631 has 8 divisors (see below), whose sum is σ = 2126274560. Its totient is φ = 2105696088.

The previous prime is 2115972623. The next prime is 2115972641. The reversal of 2115972631 is 1362795112.

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 2115972631 - 2³ = 2115972623 is a prime.

It is a super-2 number, since 2×2115972631² = 8954680350282124322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115972641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172810 + ... + 184648.

It is an arithmetic number, because the mean of its divisors is an integer number (265784320).

Almost surely, 2^2115972631 is an apocalyptic number.

2115972631 is a deficient number, since it is larger than the sum of its proper divisors (10301929).

2115972631 is a wasteful number, since it uses less digits than its factorization.

2115972631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12693.

The product of its digits is 22680, while the sum is 37.

The square root of 2115972631 is about 45999.7025099076. The cubic root of 2115972631 is about 1283.8176694529.

The spelling of 2115972631 in words is "two billion, one hundred fifteen million, nine hundred seventy-two thousand, six hundred thirty-one".