2132478631 has 4 divisors (see below), whose sum is σ = 2136556552. Its totient is φ = 2128400712.

The previous prime is 2132478617. The next prime is 2132478637. The reversal of 2132478631 is 1368742312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2132478631 - 2⁵ = 2132478599 is a prime.

It is a super-2 number, since 2×2132478631² = 9094930223343268322, 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 (2132478637) 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, 2038176 + ... + 2039221.

It is an arithmetic number, because the mean of its divisors is an integer number (534139138).

Almost surely, 2^2132478631 is an apocalyptic number.

2132478631 is a deficient number, since it is larger than the sum of its proper divisors (4077921).

2132478631 is an equidigital number, since it uses as much as digits as its factorization.

2132478631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077920.

The product of its digits is 48384, while the sum is 37.

The square root of 2132478631 is about 46178.7681840908. The cubic root of 2132478631 is about 1287.1472385870.

The spelling of 2132478631 in words is "two billion, one hundred thirty-two million, four hundred seventy-eight thousand, six hundred thirty-one".