402131403 has 24 divisors (see below), whose sum is σ = 599778816. Its totient is φ = 259459200.

The previous prime is 402131393. The next prime is 402131417. The reversal of 402131403 is 304131204.

It is not a de Polignac number, because 402131403 - 2⁶ = 402131339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402131423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42573 + ... + 51153.

It is an arithmetic number, because the mean of its divisors is an integer number (24990784).

Almost surely, 2^402131403 is an apocalyptic number.

402131403 is a deficient number, since it is larger than the sum of its proper divisors (197647413).

402131403 is a wasteful number, since it uses less digits than its factorization.

402131403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8755 (or 8752 counting only the distinct ones).

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

The square root of 402131403 is about 20053.2142810074. The cubic root of 402131403 is about 738.1126747567.

Adding to 402131403 its reverse (304131204), we get a palindrome (706262607).

It can be divided in two parts, 40213 and 1403, that added together give a triangular number (41616 = T₂₈₈).

The spelling of 402131403 in words is "four hundred two million, one hundred thirty-one thousand, four hundred three".