253123311 has 8 divisors (see below), whose sum is σ = 385711744. Its totient is φ = 144641880.

The previous prime is 253123291. The next prime is 253123333. The reversal of 253123311 is 113321352.

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

It is not a de Polignac number, because 253123311 - 2⁵ = 253123279 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: 12053491 = 253123311 / (2 + 5 + 3 + 1 + 2 + 3 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253123411) 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, 6026725 + ... + 6026766.

It is an arithmetic number, because the mean of its divisors is an integer number (48213968).

Almost surely, 2^253123311 is an apocalyptic number.

253123311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

253123311 is a deficient number, since it is larger than the sum of its proper divisors (132588433).

253123311 is a wasteful number, since it uses less digits than its factorization.

253123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12053501.

The product of its digits is 540, while the sum is 21.

The square root of 253123311 is about 15909.8494964597. The cubic root of 253123311 is about 632.5730920025.

Adding to 253123311 its reverse (113321352), we get a palindrome (366444663).

The spelling of 253123311 in words is "two hundred fifty-three million, one hundred twenty-three thousand, three hundred eleven".