31323220032133 has 16 divisors (see below), whose sum is σ = 32991105558400. Its totient is φ = 29657268590400.

The previous prime is 31323220032131. The next prime is 31323220032157. The reversal of 31323220032133 is 33123002232313.

It is a cyclic number.

It is not a de Polignac number, because 31323220032133 - 2¹ = 31323220032131 is a prime.

It is a super-2 number, since 2×31323220032133² (a number of 28 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 (31323220032131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262303003 + ... + 262422391.

It is an arithmetic number, because the mean of its divisors is an integer number (2061944097400).

Almost surely, 2^{31323220032133} is an apocalyptic number.

It is an amenable number.

31323220032133 is a deficient number, since it is larger than the sum of its proper divisors (1667885526267).

31323220032133 is a wasteful number, since it uses less digits than its factorization.

31323220032133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127372.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 31323220032133 its reverse (33123002232313), we get a palindrome (64446222264446).

The spelling of 31323220032133 in words is "thirty-one trillion, three hundred twenty-three billion, two hundred twenty million, thirty-two thousand, one hundred thirty-three".