402312653 has 2 divisors, whose sum is σ = 402312654. Its totient is φ = 402312652.

The previous prime is 402312643. The next prime is 402312697. The reversal of 402312653 is 356213204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307406089 + 94906564 = 17533^2 + 9742^2 .

It is a cyclic number.

It is not a de Polignac number, because 402312653 - 2²⁶ = 335203789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402312613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201156326 + 201156327.

It is an arithmetic number, because the mean of its divisors is an integer number (201156327).

Almost surely, 2^402312653 is an apocalyptic number.

It is an amenable number.

402312653 is a deficient number, since it is larger than the sum of its proper divisors (1).

402312653 is an equidigital number, since it uses as much as digits as its factorization.

402312653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 402312653 is about 20057.7329975249. The cubic root of 402312653 is about 738.2235529643.

Adding to 402312653 its reverse (356213204), we get a palindrome (758525857).

The spelling of 402312653 in words is "four hundred two million, three hundred twelve thousand, six hundred fifty-three".