253213430 has 16 divisors (see below), whose sum is σ = 455973840. Its totient is φ = 101243232.

The previous prime is 253213423. The next prime is 253213447. The reversal of 253213430 is 34312352.

It is a super-2 number, since 2×253213430² = 128234082264729800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253213396 and 253213405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33677 + ... + 40503.

It is an arithmetic number, because the mean of its divisors is an integer number (28498365).

Almost surely, 2^253213430 is an apocalyptic number.

253213430 is a deficient number, since it is larger than the sum of its proper divisors (202760410).

253213430 is a wasteful number, since it uses less digits than its factorization.

253213430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10543.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 253213430 is about 15912.6814208040. The cubic root of 253213430 is about 632.6481543509.

Adding to 253213430 its reverse (34312352), we get a palindrome (287525782).

The spelling of 253213430 in words is "two hundred fifty-three million, two hundred thirteen thousand, four hundred thirty".