31424100142 has 4 divisors (see below), whose sum is σ = 47136150216. Its totient is φ = 15712050070.

The previous prime is 31424100139. The next prime is 31424100199. The reversal of 31424100142 is 24100142413.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7856025034 + ... + 7856025037.

It is an arithmetic number, because the mean of its divisors is an integer number (11784037554).

Almost surely, 2^31424100142 is an apocalyptic number.

31424100142 is a deficient number, since it is larger than the sum of its proper divisors (15712050074).

31424100142 is a wasteful number, since it uses less digits than its factorization.

31424100142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15712050073.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31424100142 its reverse (24100142413), we get a palindrome (55524242555).

The spelling of 31424100142 in words is "thirty-one billion, four hundred twenty-four million, one hundred thousand, one hundred forty-two".