1212033431394 has 24 divisors (see below), whose sum is σ = 2631921165900. Its totient is φ = 403111339008.

The previous prime is 1212033431393. The next prime is 1212033431501. The reversal of 1212033431394 is 4931343302121.

1212033431394 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 0 + 334 + 313 + 9 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1110104568225 + 101928863169 = 1053615^2 + 319263^2 .

It is not an unprimeable number, because it can be changed into a prime (1212033431393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74975427 + ... + 74991590.

Almost surely, 2^{1212033431394} is an apocalyptic number.

1212033431394 is an abundant number, since it is smaller than the sum of its proper divisors (1419887734506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212033431394 is a wasteful number, since it uses less digits than its factorization.

1212033431394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149967474 (or 149967471 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 1212033431394 in words is "one trillion, two hundred twelve billion, thirty-three million, four hundred thirty-one thousand, three hundred ninety-four".