2131347923 has 8 divisors (see below), whose sum is σ = 2246945568. Its totient is φ = 2017661184.

The previous prime is 2131347893. The next prime is 2131347949. The reversal of 2131347923 is 3297431312.

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 2131347923 - 2²⁴ = 2114570707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131347973) 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, 475436 + ... + 479897.

It is an arithmetic number, because the mean of its divisors is an integer number (280868196).

Almost surely, 2^2131347923 is an apocalyptic number.

2131347923 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2131347923 is a deficient number, since it is larger than the sum of its proper divisors (115597645).

2131347923 is an equidigital number, since it uses as much as digits as its factorization.

2131347923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955453.

The product of its digits is 27216, while the sum is 35.

The square root of 2131347923 is about 46166.5238349174. The cubic root of 2131347923 is about 1286.9197028976.

The spelling of 2131347923 in words is "two billion, one hundred thirty-one million, three hundred forty-seven thousand, nine hundred twenty-three".