401704531 has 2 divisors, whose sum is σ = 401704532. Its totient is φ = 401704530.

The previous prime is 401704519. The next prime is 401704547. The reversal of 401704531 is 135407104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401704531 - 2¹⁹ = 401180243 is a prime.

It is a super-2 number, since 2×401704531² = 322733060451859922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401704496 and 401704505.

It is not a weakly prime, because it can be changed into another prime (401704031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200852265 + 200852266.

It is an arithmetic number, because the mean of its divisors is an integer number (200852266).

Almost surely, 2^401704531 is an apocalyptic number.

401704531 is a deficient number, since it is larger than the sum of its proper divisors (1).

401704531 is an equidigital number, since it uses as much as digits as its factorization.

401704531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 401704531 is about 20042.5679741893. The cubic root of 401704531 is about 737.8514075976.

The spelling of 401704531 in words is "four hundred one million, seven hundred four thousand, five hundred thirty-one".