253868431 has 8 divisors (see below), whose sum is σ = 260632064. Its totient is φ = 247143960.

The previous prime is 253868423. The next prime is 253868441. The reversal of 253868431 is 134868352.

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

It is a cyclic number.

It is not a de Polignac number, because 253868431 - 2³ = 253868423 is a prime.

It is a super-2 number, since 2×253868431² = 128898360516803522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253868441) 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, 3586 + ... + 22816.

It is an arithmetic number, because the mean of its divisors is an integer number (32579008).

Almost surely, 2^253868431 is an apocalyptic number.

253868431 is a deficient number, since it is larger than the sum of its proper divisors (6763633).

253868431 is a wasteful number, since it uses less digits than its factorization.

253868431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19581.

The product of its digits is 138240, while the sum is 40.

The square root of 253868431 is about 15933.2492292062. The cubic root of 253868431 is about 633.1931865031.

The spelling of 253868431 in words is "two hundred fifty-three million, eight hundred sixty-eight thousand, four hundred thirty-one".