31540320354 has 16 divisors (see below), whose sum is σ = 66791266848. Its totient is φ = 9895002432.

The previous prime is 31540320349. The next prime is 31540320377. The reversal of 31540320354 is 45302304513.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154609312 + ... + 154609515.

It is an arithmetic number, because the mean of its divisors is an integer number (4174454178).

Almost surely, 2^31540320354 is an apocalyptic number.

31540320354 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31540320354 is an abundant number, since it is smaller than the sum of its proper divisors (35250946494).

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

31540320354 is a wasteful number, since it uses less digits than its factorization.

31540320354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309218849.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 31540320354 its reverse (45302304513), we get a palindrome (76842624867).

The spelling of 31540320354 in words is "thirty-one billion, five hundred forty million, three hundred twenty thousand, three hundred fifty-four".