253311402 has 16 divisors (see below), whose sum is σ = 511542720. Its totient is φ = 83617152.

The previous prime is 253311379. The next prime is 253311427. The reversal of 253311402 is 204113352.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204327 + ... + 205562.

It is an arithmetic number, because the mean of its divisors is an integer number (31971420).

Almost surely, 2^253311402 is an apocalyptic number.

253311402 is an abundant number, since it is smaller than the sum of its proper divisors (258231318).

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

253311402 is a wasteful number, since it uses less digits than its factorization.

253311402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409997.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 253311402 is about 15915.7595483219. The cubic root of 253311402 is about 632.7297374550.

Adding to 253311402 its reverse (204113352), we get a palindrome (457424754).

It can be divided in two parts, 253 and 311402, that added together give a triangular number (311655 = T₇₈₉).

The spelling of 253311402 in words is "two hundred fifty-three million, three hundred eleven thousand, four hundred two".