31302213122 has 8 divisors (see below), whose sum is σ = 46955505276. Its totient is φ = 15650378032.

The previous prime is 31302213109. The next prime is 31302213143. The reversal of 31302213122 is 22131220313.

It can be written as a sum of positive squares in 2 ways, for example, as 27466764361 + 3835448761 = 165731^2 + 61931^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31302213094 and 31302213103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308873 + ... + 397500.

Almost surely, 2^31302213122 is an apocalyptic number.

31302213122 is a deficient number, since it is larger than the sum of its proper divisors (15653292154).

31302213122 is a wasteful number, since it uses less digits than its factorization.

31302213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728532.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31302213122 its reverse (22131220313), we get a palindrome (53433433435).

The spelling of 31302213122 in words is "thirty-one billion, three hundred two million, two hundred thirteen thousand, one hundred twenty-two".