31409142 has 8 divisors (see below), whose sum is σ = 62818296. Its totient is φ = 10469712.

The previous prime is 31409087. The next prime is 31409167. The reversal of 31409142 is 24190413.

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

31409142 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2617423 + ... + 2617434.

It is an arithmetic number, because the mean of its divisors is an integer number (7852287).

Almost surely, 2^31409142 is an apocalyptic number.

31409142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31409142 is a wasteful number, since it uses less digits than its factorization.

31409142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234862.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 31409142 is about 5604.3859610130. The cubic root of 31409142 is about 315.5140410149.

Adding to 31409142 its reverse (24190413), we get a palindrome (55599555).

The spelling of 31409142 in words is "thirty-one million, four hundred nine thousand, one hundred forty-two".