401431406 has 8 divisors (see below), whose sum is σ = 602785800. Its totient is φ = 200502808.

The previous prime is 401431399. The next prime is 401431417. The reversal of 401431406 is 604134104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×401431406² = 322294347446273672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104081 + ... + 107868.

It is an arithmetic number, because the mean of its divisors is an integer number (75348225).

Almost surely, 2^401431406 is an apocalyptic number.

401431406 is a deficient number, since it is larger than the sum of its proper divisors (201354394).

401431406 is a wasteful number, since it uses less digits than its factorization.

401431406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212898.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 401431406 is about 20035.7531927302. The cubic root of 401431406 is about 737.6841442313.

The spelling of 401431406 in words is "four hundred one million, four hundred thirty-one thousand, four hundred six".