31834357801 has 4 divisors (see below), whose sum is σ = 31834722004. Its totient is φ = 31833993600.

The previous prime is 31834357759. The next prime is 31834357831. The reversal of 31834357801 is 10875343813.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 157477401 + 31676880400 = 12549^2 + 177980^2 .

It is a 3-Lehmer number, since φ(31834357801) divides (31834357801-1)³.

It is a cyclic number.

It is not a de Polignac number, because 31834357801 - 2¹¹ = 31834355753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31834357831) 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 3 ways as a sum of consecutive naturals, for example, 36421 + ... + 254941.

It is an arithmetic number, because the mean of its divisors is an integer number (7958680501).

It is a Poulet number, since it divides 2^31834357800-1.

Almost surely, 2^31834357801 is an apocalyptic number.

31834357801 is the 145681-st pentagonal number.

It is an amenable number.

31834357801 is a deficient number, since it is larger than the sum of its proper divisors (364203).

31834357801 is a wasteful number, since it uses less digits than its factorization.

31834357801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364202.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 31834357801 in words is "thirty-one billion, eight hundred thirty-four million, three hundred fifty-seven thousand, eight hundred one".