31540330133 has 8 divisors (see below), whose sum is σ = 33978496608. Its totient is φ = 29103876144.

The previous prime is 31540330127. The next prime is 31540330147. The reversal of 31540330133 is 33103304513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31540330133 - 2⁴ = 31540330117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31540330183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389735 + ... + 463652.

It is an arithmetic number, because the mean of its divisors is an integer number (4247312076).

Almost surely, 2^31540330133 is an apocalyptic number.

It is an amenable number.

31540330133 is a deficient number, since it is larger than the sum of its proper divisors (2438166475).

31540330133 is a wasteful number, since it uses less digits than its factorization.

31540330133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856243.

The product of its (nonzero) digits is 4860, while the sum is 26.

Adding to 31540330133 its reverse (33103304513), we get a palindrome (64643634646).

The spelling of 31540330133 in words is "thirty-one billion, five hundred forty million, three hundred thirty thousand, one hundred thirty-three".