1253311040 has 56 divisors (see below), whose sum is σ = 3035076480. Its totient is φ = 492819968.

The previous prime is 1253311013. The next prime is 1253311049. The reversal of 1253311040 is 401133521.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1253311049) 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, 14312 + ... + 52071.

Almost surely, 2^1253311040 is an apocalyptic number.

1253311040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253311040 is an abundant number, since it is smaller than the sum of its proper divisors (1781765440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253311040 is an equidigital number, since it uses as much as digits as its factorization.

1253311040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66459 (or 66449 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1253311040 is about 35402.1332690560. The cubic root of 1253311040 is about 1078.1676290531.

Adding to 1253311040 its reverse (401133521), we get a palindrome (1654444561).

The spelling of 1253311040 in words is "one billion, two hundred fifty-three million, three hundred eleven thousand, forty".