31106343438 has 16 divisors (see below), whose sum is σ = 69125207760. Its totient is φ = 10368781128.

The previous prime is 31106343421. The next prime is 31106343439. The reversal of 31106343438 is 83434360113.

31106343438 is a `hidden beast` number, since 3 + 1 + 10 + 634 + 3 + 4 + 3 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31106343439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288021645 + ... + 288021752.

It is an arithmetic number, because the mean of its divisors is an integer number (4320325485).

Almost surely, 2^31106343438 is an apocalyptic number.

31106343438 is an abundant number, since it is smaller than the sum of its proper divisors (38018864322).

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

31106343438 is a wasteful number, since it uses less digits than its factorization.

31106343438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576043408 (or 576043402 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

It can be divided in two parts, 31106 and 343438, that added together give a square (374544 = 612²).

The spelling of 31106343438 in words is "thirty-one billion, one hundred six million, three hundred forty-three thousand, four hundred thirty-eight".