31433231442 has 8 divisors (see below), whose sum is σ = 62866462896. Its totient is φ = 10477743812.

The previous prime is 31433231377. The next prime is 31433231461. The reversal of 31433231442 is 24413233413.

It is a happy number.

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

31433231442 is an admirable 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, 2619435948 + ... + 2619435959.

It is an arithmetic number, because the mean of its divisors is an integer number (7858307862).

Almost surely, 2^31433231442 is an apocalyptic number.

31433231442 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.

31433231442 is a wasteful number, since it uses less digits than its factorization.

31433231442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238871912.

The product of its digits is 20736, while the sum is 30.

Adding to 31433231442 its reverse (24413233413), we get a palindrome (55846464855).

The spelling of 31433231442 in words is "thirty-one billion, four hundred thirty-three million, two hundred thirty-one thousand, four hundred forty-two".