402312047 has 2 divisors, whose sum is σ = 402312048. Its totient is φ = 402312046.

The previous prime is 402312037. The next prime is 402312083. The reversal of 402312047 is 740213204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402312047 is a prime.

It is a super-2 number, since 2×402312047² = 323709966322660418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402312007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201156023 + 201156024.

It is an arithmetic number, because the mean of its divisors is an integer number (201156024).

Almost surely, 2^402312047 is an apocalyptic number.

402312047 is a deficient number, since it is larger than the sum of its proper divisors (1).

402312047 is an equidigital number, since it uses as much as digits as its factorization.

402312047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 402312047 is about 20057.7178911261. The cubic root of 402312047 is about 738.2231823043.

The spelling of 402312047 in words is "four hundred two million, three hundred twelve thousand, forty-seven".