401024531 has 2 divisors, whose sum is σ = 401024532. Its totient is φ = 401024530.

The previous prime is 401024521. The next prime is 401024563. The reversal of 401024531 is 135420104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401024531 is a prime.

It is a super-2 number, since 2×401024531² = 321641348927539922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401024521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200512265 + 200512266.

It is an arithmetic number, because the mean of its divisors is an integer number (200512266).

Almost surely, 2^401024531 is an apocalyptic number.

401024531 is a deficient number, since it is larger than the sum of its proper divisors (1).

401024531 is an equidigital number, since it uses as much as digits as its factorization.

401024531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401024531 is about 20025.5968949742. The cubic root of 401024531 is about 737.4348308210.

Adding to 401024531 its reverse (135420104), we get a palindrome (536444635).

The spelling of 401024531 in words is "four hundred one million, twenty-four thousand, five hundred thirty-one".