31040146 has 8 divisors (see below), whose sum is σ = 46588464. Its totient is φ = 15510660.

The previous prime is 31040137. The next prime is 31040153. The reversal of 31040146 is 64104013.

It is a happy number.

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

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, 621 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (5823558).

Almost surely, 2^31040146 is an apocalyptic number.

31040146 is a deficient number, since it is larger than the sum of its proper divisors (15548318).

31040146 is a wasteful number, since it uses less digits than its factorization.

31040146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9416.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 31040146 is about 5571.3684135946. The cubic root of 31040146 is about 314.2736130524.

Adding to 31040146 its reverse (64104013), we get a palindrome (95144159).

The spelling of 31040146 in words is "thirty-one million, forty thousand, one hundred forty-six".