401768231 has 2 divisors, whose sum is σ = 401768232. Its totient is φ = 401768230.

The previous prime is 401768207. The next prime is 401768239. The reversal of 401768231 is 132867104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401768231 is a prime.

It is a super-2 number, since 2×401768231² = 322835422881738722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401768239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200884115 + 200884116.

It is an arithmetic number, because the mean of its divisors is an integer number (200884116).

Almost surely, 2^401768231 is an apocalyptic number.

401768231 is a deficient number, since it is larger than the sum of its proper divisors (1).

401768231 is an equidigital number, since it uses as much as digits as its factorization.

401768231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 401768231 is about 20044.1570289199. The cubic root of 401768231 is about 737.8904069507.

The spelling of 401768231 in words is "four hundred one million, seven hundred sixty-eight thousand, two hundred thirty-one".