2261673531 has 48 divisors (see below), whose sum is σ = 3732951040. Its totient is φ = 1308000960.

The previous prime is 2261673527. The next prime is 2261673539. The reversal of 2261673531 is 1353761622.

2261673531 is a `hidden beast` number, since 2 + 2 + 61 + 67 + 3 + 531 = 666.

It is not a de Polignac number, because 2261673531 - 2² = 2261673527 is a prime.

It is a super-2 number, since 2×2261673531² = 10230334321652015922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261673539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 278316 + ... + 286326.

Almost surely, 2^2261673531 is an apocalyptic number.

2261673531 is a deficient number, since it is larger than the sum of its proper divisors (1471277509).

2261673531 is a wasteful number, since it uses less digits than its factorization.

2261673531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8176 (or 8173 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 2261673531 is about 47557.0555333275. The cubic root of 2261673531 is about 1312.6329600269.

The spelling of 2261673531 in words is "two billion, two hundred sixty-one million, six hundred seventy-three thousand, five hundred thirty-one".