1345436631 has 36 divisors (see below), whose sum is σ = 2441320336. Its totient is φ = 698924160.

The previous prime is 1345436623. The next prime is 1345436639. The reversal of 1345436631 is 1366345431.

1345436631 is a `hidden beast` number, since 13 + 4 + 5 + 4 + 3 + 6 + 631 = 666.

It is an interprime number because it is at equal distance from previous prime (1345436623) and next prime (1345436639).

It is not a de Polignac number, because 1345436631 - 2³ = 1345436623 is a prime.

It is a super-2 number, since 2×1345436631² = 3620399456073260322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345436639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 80626 + ... + 95871.

Almost surely, 2^1345436631 is an apocalyptic number.

1345436631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1345436631 is a deficient number, since it is larger than the sum of its proper divisors (1095883705).

1345436631 is a wasteful number, since it uses less digits than its factorization.

1345436631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176532 (or 176518 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 1345436631 is about 36680.1939880366. The cubic root of 1345436631 is about 1103.9627404525.

The spelling of 1345436631 in words is "one billion, three hundred forty-five million, four hundred thirty-six thousand, six hundred thirty-one".