401131023 has 16 divisors (see below), whose sum is σ = 550089216. Its totient is φ = 259817760.

The previous prime is 401131001. The next prime is 401131057. The reversal of 401131023 is 320131104.

It is not a de Polignac number, because 401131023 - 2⁵ = 401130991 is a prime.

It is a super-2 number, since 2×401131023² = 321812195226053058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401130993 and 401131011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401131223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89158 + ... + 93548.

It is an arithmetic number, because the mean of its divisors is an integer number (34380576).

Almost surely, 2^401131023 is an apocalyptic number.

401131023 is a deficient number, since it is larger than the sum of its proper divisors (148958193).

401131023 is a wasteful number, since it uses less digits than its factorization.

401131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5254.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 401131023 is about 20028.2556155048. The cubic root of 401131023 is about 737.5001002777.

Adding to 401131023 its reverse (320131104), we get a palindrome (721262127).

The spelling of 401131023 in words is "four hundred one million, one hundred thirty-one thousand, twenty-three".