31204540140122 has 4 divisors (see below), whose sum is σ = 46806810210186. Its totient is φ = 15602270070060.

The previous prime is 31204540140077. The next prime is 31204540140139. The reversal of 31204540140122 is 22104104540213.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 30653618438041 + 550921702081 = 5536571^2 + 742241^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7801135035029 + ... + 7801135035032.

Almost surely, 2^{31204540140122} is an apocalyptic number.

31204540140122 is a deficient number, since it is larger than the sum of its proper divisors (15602270070064).

31204540140122 is a wasteful number, since it uses less digits than its factorization.

31204540140122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15602270070063.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 31204540140122 its reverse (22104104540213), we get a palindrome (53308644680335).

The spelling of 31204540140122 in words is "thirty-one trillion, two hundred four billion, five hundred forty million, one hundred forty thousand, one hundred twenty-two".