135431004 has 24 divisors (see below), whose sum is σ = 316193920. Its totient is φ = 45116784.

The previous prime is 135431003. The next prime is 135431029. The reversal of 135431004 is 400134531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135431003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37377 + ... + 40839.

Almost surely, 2^135431004 is an apocalyptic number.

It is an amenable number.

135431004 is an abundant number, since it is smaller than the sum of its proper divisors (180762916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135431004 is a wasteful number, since it uses less digits than its factorization.

135431004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6729 (or 6727 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 135431004 is about 11637.4827174952. The cubic root of 135431004 is about 513.5381347685.

Adding to 135431004 its reverse (400134531), we get a palindrome (535565535).

The spelling of 135431004 in words is "one hundred thirty-five million, four hundred thirty-one thousand, four".