400423112357 has 2 divisors, whose sum is σ = 400423112358. Its totient is φ = 400423112356.

The previous prime is 400423112311. The next prime is 400423112363. The reversal of 400423112357 is 753211324004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209769496036 + 190653616321 = 458006^2 + 436639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400423112357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400423112377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200211556178 + 200211556179.

It is an arithmetic number, because the mean of its divisors is an integer number (200211556179).

Almost surely, 2^400423112357 is an apocalyptic number.

It is an amenable number.

400423112357 is a deficient number, since it is larger than the sum of its proper divisors (1).

400423112357 is an equidigital number, since it uses as much as digits as its factorization.

400423112357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 400423112357 in words is "four hundred billion, four hundred twenty-three million, one hundred twelve thousand, three hundred fifty-seven".