31443142102 has 32 divisors (see below), whose sum is σ = 48065592960. Its totient is φ = 15423851520.

The previous prime is 31443142069. The next prime is 31443142153. The reversal of 31443142102 is 20124134413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31162174 + ... + 31163182.

It is an arithmetic number, because the mean of its divisors is an integer number (1502049780).

Almost surely, 2^31443142102 is an apocalyptic number.

31443142102 is a deficient number, since it is larger than the sum of its proper divisors (16622450858).

31443142102 is a wasteful number, since it uses less digits than its factorization.

31443142102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008.

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

Adding to 31443142102 its reverse (20124134413), we get a palindrome (51567276515).

The spelling of 31443142102 in words is "thirty-one billion, four hundred forty-three million, one hundred forty-two thousand, one hundred two".