1245456631 has 8 divisors (see below), whose sum is σ = 1342983600. Its totient is φ = 1151127360.

The previous prime is 1245456571. The next prime is 1245456637. The reversal of 1245456631 is 1366545421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245456631 - 2⁷ = 1245456503 is a prime.

It is a super-2 number, since 2×1245456631² = 3102324439403740322, 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 (1245456637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798616 + ... + 800173.

It is an arithmetic number, because the mean of its divisors is an integer number (167872950).

Almost surely, 2^1245456631 is an apocalyptic number.

1245456631 is a deficient number, since it is larger than the sum of its proper divisors (97526969).

1245456631 is a wasteful number, since it uses less digits than its factorization.

1245456631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598849.

The product of its digits is 86400, while the sum is 37.

The square root of 1245456631 is about 35291.0276274296. The cubic root of 1245456631 is about 1075.9106416743.

The spelling of 1245456631 in words is "one billion, two hundred forty-five million, four hundred fifty-six thousand, six hundred thirty-one".