31212543424234 has 16 divisors (see below), whose sum is σ = 47069486053128. Its totient is φ = 15522758551552.

The previous prime is 31212543424229. The next prime is 31212543424243. The reversal of 31212543424234 is 43242434521213.

It can be written as a sum of positive squares in 4 ways, for example, as 28116474435009 + 3096068989225 = 5302497^2 + 1759565^2 .

It is a super-2 number, since 2×31212543424234² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9525919 + ... + 12376114.

Almost surely, 2^{31212543424234} is an apocalyptic number.

31212543424234 is a deficient number, since it is larger than the sum of its proper divisors (15856942628894).

31212543424234 is a wasteful number, since it uses less digits than its factorization.

31212543424234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21905849.

The product of its digits is 552960, while the sum is 40.

Adding to 31212543424234 its reverse (43242434521213), we get a palindrome (74454977945447).

The spelling of 31212543424234 in words is "thirty-one trillion, two hundred twelve billion, five hundred forty-three million, four hundred twenty-four thousand, two hundred thirty-four".