31342121242 has 4 divisors (see below), whose sum is σ = 47013181866. Its totient is φ = 15671060620.

The previous prime is 31342121233. The next prime is 31342121257. The reversal of 31342121242 is 24212124313.

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

It can be written as a sum of positive squares in only one way, i.e., 31315195521 + 26925721 = 176961^2 + 5189^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7835530309 + ... + 7835530312.

Almost surely, 2^31342121242 is an apocalyptic number.

31342121242 is a deficient number, since it is larger than the sum of its proper divisors (15671060624).

31342121242 is a wasteful number, since it uses less digits than its factorization.

31342121242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15671060623.

The product of its digits is 2304, while the sum is 25.

Adding to 31342121242 its reverse (24212124313), we get a palindrome (55554245555).

The spelling of 31342121242 in words is "thirty-one billion, three hundred forty-two million, one hundred twenty-one thousand, two hundred forty-two".