31301200133 has 4 divisors (see below), whose sum is σ = 35772800160. Its totient is φ = 26829600108.

The previous prime is 31301200127. The next prime is 31301200213. The reversal of 31301200133 is 33100210313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31301200133 - 2⁶ = 31301200069 is a prime.

It is a super-2 number, since 2×31301200133² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301200103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2235800003 + ... + 2235800016.

It is an arithmetic number, because the mean of its divisors is an integer number (8943200040).

Almost surely, 2^31301200133 is an apocalyptic number.

It is an amenable number.

31301200133 is a deficient number, since it is larger than the sum of its proper divisors (4471600027).

31301200133 is an equidigital number, since it uses as much as digits as its factorization.

31301200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471600026.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31301200133 its reverse (33100210313), we get a palindrome (64401410446).

The spelling of 31301200133 in words is "thirty-one billion, three hundred one million, two hundred thousand, one hundred thirty-three".