2153992931 has 4 divisors (see below), whose sum is σ = 2267361000. Its totient is φ = 2040624864.

The previous prime is 2153992921. The next prime is 2153992949. The reversal of 2153992931 is 1392993512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2153992931 - 2¹⁴ = 2153976547 is a prime.

It is a super-2 number, since 2×2153992931² = 9279371093595941522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153992921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56684006 + ... + 56684043.

It is an arithmetic number, because the mean of its divisors is an integer number (566840250).

Almost surely, 2^2153992931 is an apocalyptic number.

2153992931 is a deficient number, since it is larger than the sum of its proper divisors (113368069).

2153992931 is a wasteful number, since it uses less digits than its factorization.

2153992931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113368068.

The product of its digits is 131220, while the sum is 44.

The square root of 2153992931 is about 46411.1293872493. The cubic root of 2153992931 is about 1291.4613831200.

The spelling of 2153992931 in words is "two billion, one hundred fifty-three million, nine hundred ninety-two thousand, nine hundred thirty-one".