1631294352 has 30 divisors (see below), whose sum is σ = 4565358902. Its totient is φ = 543764736.

The previous prime is 1631294351. The next prime is 1631294447. The reversal of 1631294352 is 2534921361.

1631294352 is a `hidden beast` number, since 16 + 3 + 1 + 294 + 352 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1059893136 + 571401216 = 32556^2 + 23904^2 .

It is a super-2 number, since 2×1631294352² = 5322242525734199808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1631294351) 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, 5664073 + ... + 5664360.

Almost surely, 2^1631294352 is an apocalyptic number.

1631294352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1631294352 is an abundant number, since it is smaller than the sum of its proper divisors (2934064550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1631294352 is a wasteful number, since it uses less digits than its factorization.

1631294352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11328447 (or 11328438 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 1631294352 is about 40389.2851137526. The cubic root of 1631294352 is about 1177.1833500180.

The spelling of 1631294352 in words is "one billion, six hundred thirty-one million, two hundred ninety-four thousand, three hundred fifty-two".