1253420631 has 24 divisors (see below), whose sum is σ = 1865120400. Its totient is φ = 810665856.

The previous prime is 1253420593. The next prime is 1253420653. The reversal of 1253420631 is 1360243521.

1253420631 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 4 + 20 + 631 = 666.

It is not a de Polignac number, because 1253420631 - 2⁷ = 1253420503 is a prime.

It is a super-2 number, since 2×1253420631² = 3142126556432876322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1253420595 and 1253420604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253420431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46795 + ... + 68531.

It is an arithmetic number, because the mean of its divisors is an integer number (77713350).

Almost surely, 2^1253420631 is an apocalyptic number.

1253420631 is a deficient number, since it is larger than the sum of its proper divisors (611699769).

1253420631 is a wasteful number, since it uses less digits than its factorization.

1253420631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21935 (or 21932 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1253420631 is about 35403.6810374289. The cubic root of 1253420631 is about 1078.1990535548.

The spelling of 1253420631 in words is "one billion, two hundred fifty-three million, four hundred twenty thousand, six hundred thirty-one".