400032031401 has 32 divisors (see below), whose sum is σ = 598674544640. Its totient is φ = 263984994000.

The previous prime is 400032031397. The next prime is 400032031411. The reversal of 400032031401 is 104130230004.

It is not a de Polignac number, because 400032031401 - 2² = 400032031397 is a prime.

It is a super-2 number, since 2×400032031401² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400032031411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 980436 + ... + 1327146.

It is an arithmetic number, because the mean of its divisors is an integer number (18708579520).

Almost surely, 2^400032031401 is an apocalyptic number.

It is an amenable number.

400032031401 is a deficient number, since it is larger than the sum of its proper divisors (198642513239).

400032031401 is a wasteful number, since it uses less digits than its factorization.

400032031401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347154 (or 347148 counting only the distinct ones).

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

Adding to 400032031401 its reverse (104130230004), we get a palindrome (504162261405).

The spelling of 400032031401 in words is "four hundred billion, thirty-two million, thirty-one thousand, four hundred one".