134031431 has 4 divisors (see below), whose sum is σ = 135867552. Its totient is φ = 132195312.

The previous prime is 134031413. The next prime is 134031433. The reversal of 134031431 is 134130431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134031431 is a prime.

It is a super-2 number, since 2×134031431² = 35928848991815522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134031433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917951 + ... + 918096.

It is an arithmetic number, because the mean of its divisors is an integer number (33966888).

Almost surely, 2^134031431 is an apocalyptic number.

134031431 is a deficient number, since it is larger than the sum of its proper divisors (1836121).

134031431 is an equidigital number, since it uses as much as digits as its factorization.

134031431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836120.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 134031431 is about 11577.1944356135. The cubic root of 134031431 is about 511.7630014277.

Adding to 134031431 its reverse (134130431), we get a palindrome (268161862).

The spelling of 134031431 in words is "one hundred thirty-four million, thirty-one thousand, four hundred thirty-one".