31143000004142 has 32 divisors (see below), whose sum is σ = 50566420800000. Its totient is φ = 14299852092768.

The previous prime is 31143000004111. The next prime is 31143000004187. The reversal of 31143000004142 is 24140000034113.

It is a super-2 number, since 2×31143000004142² (a number of 28 digits) contains 22 as substring.

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, 46226393 + ... + 46895259.

It is an arithmetic number, because the mean of its divisors is an integer number (1580200650000).

Almost surely, 2^{31143000004142} is an apocalyptic number.

31143000004142 is a deficient number, since it is larger than the sum of its proper divisors (19423420795858).

31143000004142 is a wasteful number, since it uses less digits than its factorization.

31143000004142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678080.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31143000004142 its reverse (24140000034113), we get a palindrome (55283000038255).

The spelling of 31143000004142 in words is "thirty-one trillion, one hundred forty-three billion, four thousand, one hundred forty-two".