401532023 has 2 divisors, whose sum is σ = 401532024. Its totient is φ = 401532022.

The previous prime is 401532011. The next prime is 401532031. The reversal of 401532023 is 320235104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401532023 is a prime.

It is a super-2 number, since 2×401532023² = 322455930988945058, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 401531986 and 401532004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401532083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200766011 + 200766012.

It is an arithmetic number, because the mean of its divisors is an integer number (200766012).

Almost surely, 2^401532023 is an apocalyptic number.

401532023 is a deficient number, since it is larger than the sum of its proper divisors (1).

401532023 is an equidigital number, since it uses as much as digits as its factorization.

401532023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 401532023 is about 20038.2639717117. The cubic root of 401532023 is about 737.7457715014.

Adding to 401532023 its reverse (320235104), we get a palindrome (721767127).

The spelling of 401532023 in words is "four hundred one million, five hundred thirty-two thousand, twenty-three".