31344220546 has 4 divisors (see below), whose sum is σ = 47016330822. Its totient is φ = 15672110272.

The previous prime is 31344220499. The next prime is 31344220553. The reversal of 31344220546 is 64502244313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64502244313 = 13 ⋅4961711101.

It can be written as a sum of positive squares in only one way, i.e., 31132838025 + 211382521 = 176445^2 + 14539^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7836055135 + ... + 7836055138.

Almost surely, 2^31344220546 is an apocalyptic number.

31344220546 is a deficient number, since it is larger than the sum of its proper divisors (15672110276).

31344220546 is a wasteful number, since it uses less digits than its factorization.

31344220546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15672110275.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 31344220546 its reverse (64502244313), we get a palindrome (95846464859).

The spelling of 31344220546 in words is "thirty-one billion, three hundred forty-four million, two hundred twenty thousand, five hundred forty-six".