2472531381 has 12 divisors (see below), whose sum is σ = 3580171660. Its totient is φ = 1644321600.

The previous prime is 2472531379. The next prime is 2472531407. The reversal of 2472531381 is 1831352742.

2472531381 is a `hidden beast` number, since 2 + 47 + 2 + 531 + 3 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 896044356 + 1576487025 = 29934^2 + 39705^2 .

It is not a de Polignac number, because 2472531381 - 2¹ = 2472531379 is a prime.

It is a super-2 number, since 2×2472531381² = 12226822860059534322, 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 (2472531311) 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, 332170 + ... + 339531.

Almost surely, 2^2472531381 is an apocalyptic number.

It is an amenable number.

2472531381 is a deficient number, since it is larger than the sum of its proper divisors (1107640279).

2472531381 is a wasteful number, since it uses less digits than its factorization.

2472531381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672116 (or 672113 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 2472531381 is about 49724.5551111320. Note that the first 3 decimals coincide. The cubic root of 2472531381 is about 1352.2197374966.

The spelling of 2472531381 in words is "two billion, four hundred seventy-two million, five hundred thirty-one thousand, three hundred eighty-one".