31212144519 has 8 divisors (see below), whose sum is σ = 41620089600. Its totient is φ = 20806147896.

The previous prime is 31212144463. The next prime is 31212144529. The reversal of 31212144519 is 91544121213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31212144519 - 2⁷ = 31212144391 is a prime.

It is a super-2 number, since 2×31212144519² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31212144519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212144529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449317 + ... + 514110.

It is an arithmetic number, because the mean of its divisors is an integer number (5202511200).

Almost surely, 2^31212144519 is an apocalyptic number.

31212144519 is a deficient number, since it is larger than the sum of its proper divisors (10407945081).

31212144519 is a wasteful number, since it uses less digits than its factorization.

31212144519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974229.

The product of its digits is 8640, while the sum is 33.

The spelling of 31212144519 in words is "thirty-one billion, two hundred twelve million, one hundred forty-four thousand, five hundred nineteen".