2023531129 has 4 divisors (see below), whose sum is σ = 2025152500. Its totient is φ = 2021909760.

The previous prime is 2023531121. The next prime is 2023531229. The reversal of 2023531129 is 9211353202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 871607529 + 1151923600 = 29523^2 + 33940^2 .

It is a cyclic number.

It is not a de Polignac number, because 2023531129 - 2³ = 2023531121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2023531097 and 2023531106.

It is not an unprimeable number, because it can be changed into a prime (2023531121) 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, 808812 + ... + 811309.

It is an arithmetic number, because the mean of its divisors is an integer number (506288125).

Almost surely, 2^2023531129 is an apocalyptic number.

It is an amenable number.

2023531129 is a deficient number, since it is larger than the sum of its proper divisors (1621371).

2023531129 is a wasteful number, since it uses less digits than its factorization.

2023531129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621370.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 2023531129 is about 44983.6762503911. The cubic root of 2023531129 is about 1264.8430242601.

The spelling of 2023531129 in words is "two billion, twenty-three million, five hundred thirty-one thousand, one hundred twenty-nine".