31523034122 has 4 divisors (see below), whose sum is σ = 47284551186. Its totient is φ = 15761517060.

The previous prime is 31523034113. The next prime is 31523034143. The reversal of 31523034122 is 22143032513.

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., 23538003241 + 7985030881 = 153421^2 + 89359^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31523034091 and 31523034100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7880758529 + ... + 7880758532.

Almost surely, 2^31523034122 is an apocalyptic number.

31523034122 is a deficient number, since it is larger than the sum of its proper divisors (15761517064).

31523034122 is a wasteful number, since it uses less digits than its factorization.

31523034122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15761517063.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 31523034122 its reverse (22143032513), we get a palindrome (53666066635).

The spelling of 31523034122 in words is "thirty-one billion, five hundred twenty-three million, thirty-four thousand, one hundred twenty-two".