2931046981 has 4 divisors (see below), whose sum is σ = 2933918764. Its totient is φ = 2928175200.

The previous prime is 2931046961. The next prime is 2931047051. The reversal of 2931046981 is 1896401392.

It is a happy number.

2931046981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 791521956 + 2139525025 = 28134^2 + 46255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2931046981 - 2²³ = 2922658373 is a prime.

It is a super-2 number, since 2×2931046981² = 17182072809658428722, 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 (2931046961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434360 + ... + 1436401.

It is an arithmetic number, because the mean of its divisors is an integer number (733479691).

Almost surely, 2^2931046981 is an apocalyptic number.

It is an amenable number.

2931046981 is a deficient number, since it is larger than the sum of its proper divisors (2871783).

2931046981 is a wasteful number, since it uses less digits than its factorization.

2931046981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871782.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 2931046981 is about 54139.1446275244. The cubic root of 2931046981 is about 1431.1140976431.

The spelling of 2931046981 in words is "two billion, nine hundred thirty-one million, forty-six thousand, nine hundred eighty-one".