1145236631 has 32 divisors (see below), whose sum is σ = 1514474496. Its totient is φ = 839520000.

The previous prime is 1145236621. The next prime is 1145236633. The reversal of 1145236631 is 1366325411.

It is a de Polignac number, because none of the positive numbers 2^k-1145236631 is a prime.

It is a super-2 number, since 2×1145236631² = 2623133881968460322, 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 (1145236633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102731 + ... + 113331.

It is an arithmetic number, because the mean of its divisors is an integer number (47327328).

Almost surely, 2^1145236631 is an apocalyptic number.

1145236631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1145236631 is a deficient number, since it is larger than the sum of its proper divisors (369237865).

1145236631 is a wasteful number, since it uses less digits than its factorization.

1145236631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10703.

The product of its digits is 12960, while the sum is 32.

The square root of 1145236631 is about 33841.3449939567. The cubic root of 1145236631 is about 1046.2410203601.

The spelling of 1145236631 in words is "one billion, one hundred forty-five million, two hundred thirty-six thousand, six hundred thirty-one".