31143421351124 has 6 divisors (see below), whose sum is σ = 54500987364474. Its totient is φ = 15571710675560.

The previous prime is 31143421351109. The next prime is 31143421351177. The reversal of 31143421351124 is 42115312434113.

It can be written as a sum of positive squares in only one way, i.e., 27124118118724 + 4019303232400 = 5208082^2 + 2004820^2 .

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, 3892927668887 + ... + 3892927668894.

It is an arithmetic number, because the mean of its divisors is an integer number (9083497894079).

Almost surely, 2^{31143421351124} is an apocalyptic number.

It is an amenable number.

31143421351124 is a deficient number, since it is larger than the sum of its proper divisors (23357566013350).

31143421351124 is a wasteful number, since it uses less digits than its factorization.

31143421351124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785855337785 (or 7785855337783 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

Adding to 31143421351124 its reverse (42115312434113), we get a palindrome (73258733785237).

The spelling of 31143421351124 in words is "thirty-one trillion, one hundred forty-three billion, four hundred twenty-one million, three hundred fifty-one thousand, one hundred twenty-four".