2113949131 has 16 divisors (see below), whose sum is σ = 2474942400. Its totient is φ = 1804830720.

The previous prime is 2113949069. The next prime is 2113949141. The reversal of 2113949131 is 1319493112.

It is not a de Polignac number, because 2113949131 - 2⁷ = 2113949003 is a prime.

It is a super-2 number, since 2×2113949131² = 8937561856911310322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2113949141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76161 + ... + 100141.

It is an arithmetic number, because the mean of its divisors is an integer number (154683900).

Almost surely, 2^2113949131 is an apocalyptic number.

2113949131 is a deficient number, since it is larger than the sum of its proper divisors (360993269).

2113949131 is an equidigital number, since it uses as much as digits as its factorization.

2113949131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24259 (or 24245 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 2113949131 is about 45977.7025415581. The cubic root of 2113949131 is about 1283.4083015893.

The spelling of 2113949131 in words is "two billion, one hundred thirteen million, nine hundred forty-nine thousand, one hundred thirty-one".