31994135 has 8 divisors (see below), whose sum is σ = 38525760. Its totient is φ = 25506784.

The previous prime is 31994117. The next prime is 31994147. The reversal of 31994135 is 53149913.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31994135 - 2⁶ = 31994071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31994095 and 31994104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9455 + ... + 12384.

It is an arithmetic number, because the mean of its divisors is an integer number (4815720).

Almost surely, 2^31994135 is an apocalyptic number.

31994135 is a deficient number, since it is larger than the sum of its proper divisors (6531625).

31994135 is a wasteful number, since it uses less digits than its factorization.

31994135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22137.

The product of its digits is 14580, while the sum is 35.

The square root of 31994135 is about 5656.3358280781. The cubic root of 31994135 is about 317.4608131519.

The spelling of 31994135 in words is "thirty-one million, nine hundred ninety-four thousand, one hundred thirty-five".