143031011994 has 48 divisors (see below), whose sum is σ = 333887353800. Its totient is φ = 43989982848.

The previous prime is 143031011993. The next prime is 143031012017. The reversal of 143031011994 is 499110130341.

143031011994 is a `hidden beast` number, since 1 + 430 + 31 + 0 + 1 + 199 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 61070765625 + 81960246369 = 247125^2 + 286287^2 .

It is not an unprimeable number, because it can be changed into a prime (143031011993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396252 + ... + 665640.

Almost surely, 2^143031011994 is an apocalyptic number.

143031011994 is an abundant number, since it is smaller than the sum of its proper divisors (190856341806).

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

143031011994 is a wasteful number, since it uses less digits than its factorization.

143031011994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271679 (or 271676 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 143031011994 in words is "one hundred forty-three billion, thirty-one million, eleven thousand, nine hundred ninety-four".