31232022442 has 4 divisors (see below), whose sum is σ = 46848033666. Its totient is φ = 15616011220.

The previous prime is 31232022433. The next prime is 31232022449. The reversal of 31232022442 is 24422023213.

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., 16697549961 + 14534472481 = 129219^2 + 120559^2 .

It is not an unprimeable number, because it can be changed into a prime (31232022449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7808005609 + ... + 7808005612.

Almost surely, 2^31232022442 is an apocalyptic number.

31232022442 is a deficient number, since it is larger than the sum of its proper divisors (15616011224).

31232022442 is a wasteful number, since it uses less digits than its factorization.

31232022442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15616011223.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 31232022442 its reverse (24422023213), we get a palindrome (55654045655).

The spelling of 31232022442 in words is "thirty-one billion, two hundred thirty-two million, twenty-two thousand, four hundred forty-two".