401153231 has 4 divisors (see below), whose sum is σ = 406231200. Its totient is φ = 396075264.

The previous prime is 401153219. The next prime is 401153239. The reversal of 401153231 is 132351104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401153231 - 2¹⁰ = 401152207 is a prime.

It is a super-2 number, since 2×401153231² = 321847829483478722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401153239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2538866 + ... + 2539023.

It is an arithmetic number, because the mean of its divisors is an integer number (101557800).

Almost surely, 2^401153231 is an apocalyptic number.

401153231 is a deficient number, since it is larger than the sum of its proper divisors (5077969).

401153231 is an equidigital number, since it uses as much as digits as its factorization.

401153231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077968.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 401153231 is about 20028.8100245621. The cubic root of 401153231 is about 737.5137102115.

The spelling of 401153231 in words is "four hundred one million, one hundred fifty-three thousand, two hundred thirty-one".