31212413434 has 4 divisors (see below), whose sum is σ = 46818620154. Its totient is φ = 15606206716.

The previous prime is 31212413431. The next prime is 31212413471. The reversal of 31212413434 is 43431421213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43431421213 = 521 ⋅83361653.

It can be written as a sum of positive squares in only one way, i.e., 16332073209 + 14880340225 = 127797^2 + 121985^2 .

It is not an unprimeable number, because it can be changed into a prime (31212413431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7803103357 + ... + 7803103360.

Almost surely, 2^31212413434 is an apocalyptic number.

31212413434 is a deficient number, since it is larger than the sum of its proper divisors (15606206720).

31212413434 is a wasteful number, since it uses less digits than its factorization.

31212413434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15606206719.

The product of its digits is 6912, while the sum is 28.

Adding to 31212413434 its reverse (43431421213), we get a palindrome (74643834647).

The spelling of 31212413434 in words is "thirty-one billion, two hundred twelve million, four hundred thirteen thousand, four hundred thirty-four".