20312103031142 has 16 divisors (see below), whose sum is σ = 32883034160592. Its totient is φ = 9354480949920.

The previous prime is 20312103031133. The next prime is 20312103031153. The reversal of 20312103031142 is 24113030121302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847314188 + ... + 847338159.

It is an arithmetic number, because the mean of its divisors is an integer number (2055189635037).

Almost surely, 2^{20312103031142} is an apocalyptic number.

20312103031142 is a deficient number, since it is larger than the sum of its proper divisors (12570931129450).

20312103031142 is a wasteful number, since it uses less digits than its factorization.

20312103031142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694652823.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20312103031142 its reverse (24113030121302), we get a palindrome (44425133152444).

The spelling of 20312103031142 in words is "twenty trillion, three hundred twelve billion, one hundred three million, thirty-one thousand, one hundred forty-two".