31122002234 has 4 divisors (see below), whose sum is σ = 46683003354. Its totient is φ = 15561001116.

The previous prime is 31122002231. The next prime is 31122002273. The reversal of 31122002234 is 43220022113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43220022113 = 84737 ⋅510049.

It can be written as a sum of positive squares in only one way, i.e., 24431253025 + 6690749209 = 156305^2 + 81797^2 .

It is not an unprimeable number, because it can be changed into a prime (31122002231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7780500557 + ... + 7780500560.

Almost surely, 2^31122002234 is an apocalyptic number.

31122002234 is a deficient number, since it is larger than the sum of its proper divisors (15561001120).

31122002234 is a wasteful number, since it uses less digits than its factorization.

31122002234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15561001119.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31122002234 its reverse (43220022113), we get a palindrome (74342024347).

The spelling of 31122002234 in words is "thirty-one billion, one hundred twenty-two million, two thousand, two hundred thirty-four".