31140046 has 8 divisors (see below), whose sum is σ = 53382960. Its totient is φ = 13345728.

The previous prime is 31140029. The next prime is 31140047. The reversal of 31140046 is 64004113.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31140047) 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, 1112131 + ... + 1112158.

It is an arithmetic number, because the mean of its divisors is an integer number (6672870).

Almost surely, 2^31140046 is an apocalyptic number.

31140046 is a deficient number, since it is larger than the sum of its proper divisors (22242914).

31140046 is a wasteful number, since it uses less digits than its factorization.

31140046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224298.

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

The square root of 31140046 is about 5580.3266929455. The cubic root of 31140046 is about 314.6104060596.

Adding to 31140046 its reverse (64004113), we get a palindrome (95144159).

The spelling of 31140046 in words is "thirty-one million, one hundred forty thousand, forty-six".