2981477631 has 12 divisors (see below), whose sum is σ = 4369549016. Its totient is φ = 1806955920.

The previous prime is 2981477623. The next prime is 2981477641. The reversal of 2981477631 is 1367741892.

It is a happy number.

It is not a de Polignac number, because 2981477631 - 2³ = 2981477623 is a prime.

It is a super-2 number, since 2×2981477631² = 17778417728306744322, 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 (2981477641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4106356 + ... + 4107081.

Almost surely, 2^2981477631 is an apocalyptic number.

2981477631 is a deficient number, since it is larger than the sum of its proper divisors (1388071385).

2981477631 is a wasteful number, since it uses less digits than its factorization.

2981477631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8213462 (or 8213451 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 2981477631 is about 54602.9086313174. The cubic root of 2981477631 is about 1439.2752318243.

The spelling of 2981477631 in words is "two billion, nine hundred eighty-one million, four hundred seventy-seven thousand, six hundred thirty-one".