31199342 has 8 divisors (see below), whose sum is σ = 47061000. Its totient is φ = 15512344.

The previous prime is 31199323. The next prime is 31199411. The reversal of 31199342 is 24399113.

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

It is a junction number, because it is equal to n+sod(n) for n = 31199299 and 31199308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43217 + ... + 43932.

It is an arithmetic number, because the mean of its divisors is an integer number (5882625).

Almost surely, 2^31199342 is an apocalyptic number.

31199342 is a deficient number, since it is larger than the sum of its proper divisors (15861658).

31199342 is a wasteful number, since it uses less digits than its factorization.

31199342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87330.

The product of its digits is 5832, while the sum is 32.

The square root of 31199342 is about 5585.6371167486. The cubic root of 31199342 is about 314.8099702080.

The spelling of 31199342 in words is "thirty-one million, one hundred ninety-nine thousand, three hundred forty-two".