131431004 has 24 divisors (see below), whose sum is σ = 233092608. Its totient is φ = 64839600.

The previous prime is 131430991. The next prime is 131431031. The reversal of 131431004 is 400134131.

131431004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100217 + ... + 101519.

It is an arithmetic number, because the mean of its divisors is an integer number (9712192).

Almost surely, 2^131431004 is an apocalyptic number.

It is an amenable number.

131431004 is a deficient number, since it is larger than the sum of its proper divisors (101661604).

131431004 is a wasteful number, since it uses less digits than its factorization.

131431004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 131431004 is about 11464.3361779041. The cubic root of 131431004 is about 508.4316860905.

Adding to 131431004 its reverse (400134131), we get a palindrome (531565135).

The spelling of 131431004 in words is "one hundred thirty-one million, four hundred thirty-one thousand, four".