31142402105 has 16 divisors (see below), whose sum is σ = 39565177920. Its totient is φ = 23466218688.

The previous prime is 31142402069. The next prime is 31142402113. The reversal of 31142402105 is 50120424113.

It is a cyclic number.

It is not a de Polignac number, because 31142402105 - 2¹² = 31142398009 is a prime.

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, 931007 + ... + 963876.

It is an arithmetic number, because the mean of its divisors is an integer number (2472823620).

Almost surely, 2^31142402105 is an apocalyptic number.

It is an amenable number.

31142402105 is a deficient number, since it is larger than the sum of its proper divisors (8422775815).

31142402105 is a wasteful number, since it uses less digits than its factorization.

31142402105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895080.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 31142402105 its reverse (50120424113), we get a palindrome (81262826218).

The spelling of 31142402105 in words is "thirty-one billion, one hundred forty-two million, four hundred two thousand, one hundred five".