402142331317 has 2 divisors, whose sum is σ = 402142331318. Its totient is φ = 402142331316.

The previous prime is 402142331299. The next prime is 402142331333. The reversal of 402142331317 is 713133241204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292855227921 + 109287103396 = 541161^2 + 330586^2 .

It is a cyclic number.

It is not a de Polignac number, because 402142331317 - 2³⁵ = 367782592949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402142331387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201071165658 + 201071165659.

It is an arithmetic number, because the mean of its divisors is an integer number (201071165659).

Almost surely, 2^402142331317 is an apocalyptic number.

It is an amenable number.

402142331317 is a deficient number, since it is larger than the sum of its proper divisors (1).

402142331317 is an equidigital number, since it uses as much as digits as its factorization.

402142331317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 402142331317 in words is "four hundred two billion, one hundred forty-two million, three hundred thirty-one thousand, three hundred seventeen".