31442302 has 8 divisors (see below), whose sum is σ = 49645800. Its totient is φ = 14893704.

The previous prime is 31442273. The next prime is 31442347. The reversal of 31442302 is 20324413.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 31442302.

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, 413677 + ... + 413752.

It is an arithmetic number, because the mean of its divisors is an integer number (6205725).

Almost surely, 2^31442302 is an apocalyptic number.

31442302 is a deficient number, since it is larger than the sum of its proper divisors (18203498).

31442302 is a wasteful number, since it uses less digits than its factorization.

31442302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827450.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 31442302 is about 5607.3435778450. The cubic root of 31442302 is about 315.6250359376.

Adding to 31442302 its reverse (20324413), we get a palindrome (51766715).

The spelling of 31442302 in words is "thirty-one million, four hundred forty-two thousand, three hundred two".