400131403 has 12 divisors (see below), whose sum is σ = 466558680. Its totient is φ = 342159552.

The previous prime is 400131373. The next prime is 400131467. The reversal of 400131403 is 304131004.

It is not a de Polignac number, because 400131403 - 2⁵ = 400131371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400131493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11788 + ... + 30646.

It is an arithmetic number, because the mean of its divisors is an integer number (38879890).

Almost surely, 2^400131403 is an apocalyptic number.

400131403 is a deficient number, since it is larger than the sum of its proper divisors (66427277).

400131403 is a wasteful number, since it uses less digits than its factorization.

400131403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19306 (or 19299 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 400131403 is about 20003.2848052514. The cubic root of 400131403 is about 736.8869730266.

Adding to 400131403 its reverse (304131004), we get a palindrome (704262407).

The spelling of 400131403 in words is "four hundred million, one hundred thirty-one thousand, four hundred three".