1011431253 has 8 divisors (see below), whose sum is σ = 1541228608. Its totient is φ = 577960704.

The previous prime is 1011431207. The next prime is 1011431257. The reversal of 1011431253 is 3521341101.

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

It is not a de Polignac number, because 1011431253 - 2¹⁰ = 1011430229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 48163393 = 1011431253 / (1 + 0 + 1 + 1 + 4 + 3 + 1 + 2 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011431257) 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, 24081676 + ... + 24081717.

It is an arithmetic number, because the mean of its divisors is an integer number (192653576).

Almost surely, 2^1011431253 is an apocalyptic number.

It is an amenable number.

1011431253 is a deficient number, since it is larger than the sum of its proper divisors (529797355).

1011431253 is an equidigital number, since it uses as much as digits as its factorization.

1011431253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48163403.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1011431253 is about 31803.0069804728. The cubic root of 1011431253 is about 1003.7959898946.

Adding to 1011431253 its reverse (3521341101), we get a palindrome (4532772354).

The spelling of 1011431253 in words is "one billion, eleven million, four hundred thirty-one thousand, two hundred fifty-three".