31790146 has 8 divisors (see below), whose sum is σ = 47756304. Its totient is φ = 15871380.

The previous prime is 31790111. The next prime is 31790167. The reversal of 31790146 is 64109713.

It is a happy number.

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

It is a super-2 number, since 2×31790146² = 2021226765402632, which contains 22 as substring.

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, 10120 + ... + 12883.

It is an arithmetic number, because the mean of its divisors is an integer number (5969538).

Almost surely, 2^31790146 is an apocalyptic number.

31790146 is a deficient number, since it is larger than the sum of its proper divisors (15966158).

31790146 is a wasteful number, since it uses less digits than its factorization.

31790146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23696.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 31790146 is about 5638.2750908412. The cubic root of 31790146 is about 316.7846826357.

Adding to 31790146 its reverse (64109713), we get a palindrome (95899859).

The spelling of 31790146 in words is "thirty-one million, seven hundred ninety thousand, one hundred forty-six".