401143023 has 40 divisors (see below), whose sum is σ = 629041248. Its totient is φ = 254270016.

The previous prime is 401143021. The next prime is 401143037. The reversal of 401143023 is 320341104.

It is not a de Polignac number, because 401143023 - 2¹ = 401143021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401142987 and 401143005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401143021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 366465 + ... + 367557.

Almost surely, 2^401143023 is an apocalyptic number.

401143023 is a deficient number, since it is larger than the sum of its proper divisors (227898225).

401143023 is a wasteful number, since it uses less digits than its factorization.

401143023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 401143023 is about 20028.5551900281. Note that the first 3 decimals coincide. The cubic root of 401143023 is about 737.5074544109.

Adding to 401143023 its reverse (320341104), we get a palindrome (721484127).

The spelling of 401143023 in words is "four hundred one million, one hundred forty-three thousand, twenty-three".