1631331063 has 16 divisors (see below), whose sum is σ = 2417475840. Its totient is φ = 1087243992.

The previous prime is 1631331059. The next prime is 1631331151. The reversal of 1631331063 is 3601331361.

It is not a de Polignac number, because 1631331063 - 2² = 1631331059 is a prime.

It is a super-2 number, since 2×1631331063² = 5322482074217419938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631331263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126220 + ... + 138542.

It is an arithmetic number, because the mean of its divisors is an integer number (151092240).

Almost surely, 2^1631331063 is an apocalyptic number.

1631331063 is a deficient number, since it is larger than the sum of its proper divisors (786144777).

1631331063 is a wasteful number, since it uses less digits than its factorization.

1631331063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17235 (or 17229 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 1631331063 is about 40389.7395757883. The cubic root of 1631331063 is about 1177.1921804811.

The spelling of 1631331063 in words is "one billion, six hundred thirty-one million, three hundred thirty-one thousand, sixty-three".