133531424023 has 4 divisors (see below), whose sum is σ = 133543763488. Its totient is φ = 133519084560.

The previous prime is 133531424009. The next prime is 133531424077. The reversal of 133531424023 is 320424135331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320424135331 = 631 ⋅507803701.

It is a cyclic number.

It is not a de Polignac number, because 133531424023 - 2²⁵ = 133497869591 is a prime.

It is a super-2 number, since 2×133531424023² (a number of 23 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 (133531464023) 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, 6153486 + ... + 6175147.

It is an arithmetic number, because the mean of its divisors is an integer number (33385940872).

Almost surely, 2^133531424023 is an apocalyptic number.

133531424023 is a deficient number, since it is larger than the sum of its proper divisors (12339465).

133531424023 is a wasteful number, since it uses less digits than its factorization.

133531424023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12339464.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 133531424023 its reverse (320424135331), we get a palindrome (453955559354).

The spelling of 133531424023 in words is "one hundred thirty-three billion, five hundred thirty-one million, four hundred twenty-four thousand, twenty-three".