31102342 has 4 divisors (see below), whose sum is σ = 46653516. Its totient is φ = 15551170.

The previous prime is 31102339. The next prime is 31102343. The reversal of 31102342 is 24320113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7775584 + ... + 7775587.

It is an arithmetic number, because the mean of its divisors is an integer number (11663379).

Almost surely, 2^31102342 is an apocalyptic number.

31102342 is a deficient number, since it is larger than the sum of its proper divisors (15551174).

31102342 is a wasteful number, since it uses less digits than its factorization.

31102342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15551173.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31102342 is about 5576.9473728914. The cubic root of 31102342 is about 314.4833792567.

Adding to 31102342 its reverse (24320113), we get a palindrome (55422455).

The spelling of 31102342 in words is "thirty-one million, one hundred two thousand, three hundred forty-two".