2805380631 has 6 divisors (see below), whose sum is σ = 4052216480. Its totient is φ = 1870253748.

The previous prime is 2805380623. The next prime is 2805380657. The reversal of 2805380631 is 1360835082.

It is not a de Polignac number, because 2805380631 - 2³ = 2805380623 is a prime.

It is a super-2 number, since 2×2805380631² = 15740320969579916322, 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 (2805380131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155854471 + ... + 155854488.

Almost surely, 2^2805380631 is an apocalyptic number.

2805380631 is a deficient number, since it is larger than the sum of its proper divisors (1246835849).

2805380631 is a wasteful number, since it uses less digits than its factorization.

2805380631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311708965 (or 311708962 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2805380631 is about 52965.8440034708. The cubic root of 2805380631 is about 1410.3620000061.

The spelling of 2805380631 in words is "two billion, eight hundred five million, three hundred eighty thousand, six hundred thirty-one".