401326023 has 12 divisors (see below), whose sum is σ = 622465080. Its totient is φ = 229329072.

The previous prime is 401325989. The next prime is 401326027. The reversal of 401326023 is 320623104.

It is a happy number.

It is not a de Polignac number, because 401326023 - 2⁶ = 401325959 is a prime.

It is a super-2 number, since 2×401326023² = 322125153473993058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401326027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1364908 + ... + 1365201.

It is an arithmetic number, because the mean of its divisors is an integer number (51872090).

Almost surely, 2^401326023 is an apocalyptic number.

401326023 is a deficient number, since it is larger than the sum of its proper divisors (221139057).

401326023 is a wasteful number, since it uses less digits than its factorization.

401326023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730126 (or 2730119 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 401326023 is about 20033.1231464293. The cubic root of 401326023 is about 737.6195867746.

Adding to 401326023 its reverse (320623104), we get a palindrome (721949127).

The spelling of 401326023 in words is "four hundred one million, three hundred twenty-six thousand, twenty-three".