402310253 has 12 divisors (see below), whose sum is σ = 428964960. Its totient is φ = 377230272.

The previous prime is 402310247. The next prime is 402310261. The reversal of 402310253 is 352013204.

It is a happy number.

It is not a de Polignac number, because 402310253 - 2¹⁴ = 402293869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402310283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79328 + ... + 84246.

It is an arithmetic number, because the mean of its divisors is an integer number (35747080).

Almost surely, 2^402310253 is an apocalyptic number.

It is an amenable number.

402310253 is a deficient number, since it is larger than the sum of its proper divisors (26654707).

402310253 is a wasteful number, since it uses less digits than its factorization.

402310253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5236 (or 5219 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 402310253 is about 20057.6731701362. The cubic root of 402310253 is about 738.2220850015. Note that the first 3 decimals are identical.

Adding to 402310253 its reverse (352013204), we get a palindrome (754323457).

The spelling of 402310253 in words is "four hundred two million, three hundred ten thousand, two hundred fifty-three".