402402433131397 has 2 divisors, whose sum is σ = 402402433131398. Its totient is φ = 402402433131396.

The previous prime is 402402433131367. The next prime is 402402433131467. The reversal of 402402433131397 is 793131334204204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346555418768001 + 55847014363396 = 18615999^2 + 7473086^2 .

It is a cyclic number.

It is not a de Polignac number, because 402402433131397 - 2⁷ = 402402433131269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402402433131337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201201216565698 + 201201216565699.

It is an arithmetic number, because the mean of its divisors is an integer number (201201216565699).

Almost surely, 2^{402402433131397} is an apocalyptic number.

It is an amenable number.

402402433131397 is a deficient number, since it is larger than the sum of its proper divisors (1).

402402433131397 is an equidigital number, since it uses as much as digits as its factorization.

402402433131397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 46.

The spelling of 402402433131397 in words is "four hundred two trillion, four hundred two billion, four hundred thirty-three million, one hundred thirty-one thousand, three hundred ninety-seven".