1252403031 has 32 divisors (see below), whose sum is σ = 1958400000. Its totient is φ = 703766880.

The previous prime is 1252403027. The next prime is 1252403051. The reversal of 1252403031 is 1303042521.

It is not a de Polignac number, because 1252403031 - 2² = 1252403027 is a prime.

It is a super-2 number, since 2×1252403031² = 3137026704115973922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1252402989 and 1252403007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252403021) 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, 8220 + ... + 50718.

It is an arithmetic number, because the mean of its divisors is an integer number (61200000).

Almost surely, 2^1252403031 is an apocalyptic number.

1252403031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1252403031 is a deficient number, since it is larger than the sum of its proper divisors (705996969).

1252403031 is a wasteful number, since it uses less digits than its factorization.

1252403031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42579.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1252403031 is about 35389.3067324015. The cubic root of 1252403031 is about 1077.9071929241.

Adding to 1252403031 its reverse (1303042521), we get a palindrome (2555445552).

It can be divided in two parts, 125240 and 3031, that added together give a triangular number (128271 = T₅₀₆).

The spelling of 1252403031 in words is "one billion, two hundred fifty-two million, four hundred three thousand, thirty-one".