401331432 has 32 divisors (see below), whose sum is σ = 1003826880. Its totient is φ = 133710720.

The previous prime is 401331421. The next prime is 401331451. The reversal of 401331432 is 234133104.

It is a super-2 number, since 2×401331432² = 322133836622341248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401331399 and 401331408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79957 + ... + 84827.

It is an arithmetic number, because the mean of its divisors is an integer number (31369590).

Almost surely, 2^401331432 is an apocalyptic number.

It is an amenable number.

401331432 is an abundant number, since it is smaller than the sum of its proper divisors (602495448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401331432 is a wasteful number, since it uses less digits than its factorization.

401331432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8313 (or 8309 counting only the distinct ones).

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

The square root of 401331432 is about 20033.2581473908. The cubic root of 401331432 is about 737.6229005944.

Adding to 401331432 its reverse (234133104), we get a palindrome (635464536).

The spelling of 401331432 in words is "four hundred one million, three hundred thirty-one thousand, four hundred thirty-two".