2101023031 has 4 divisors (see below), whose sum is σ = 2102123232. Its totient is φ = 2099922832.

The previous prime is 2101022993. The next prime is 2101023053. The reversal of 2101023031 is 1303201012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101023031 - 2²⁷ = 1966805303 is a prime.

It is a super-2 number, since 2×2101023031² = 8828595553584853922, which 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 (2101027031) 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, 547231 + ... + 551056.

It is an arithmetic number, because the mean of its divisors is an integer number (525530808).

Almost surely, 2^2101023031 is an apocalyptic number.

2101023031 is a deficient number, since it is larger than the sum of its proper divisors (1100201).

2101023031 is a wasteful number, since it uses less digits than its factorization.

2101023031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100200.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2101023031 is about 45836.9177737771. The cubic root of 2101023031 is about 1280.7870791945.

Adding to 2101023031 its reverse (1303201012), we get a palindrome (3404224043).

The spelling of 2101023031 in words is "two billion, one hundred one million, twenty-three thousand, thirty-one".