201231101103 has 4 divisors (see below), whose sum is σ = 268308134808. Its totient is φ = 134154067400.

The previous prime is 201231101101. The next prime is 201231101173. The reversal of 201231101103 is 301101132102.

It is a happy number.

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 201231101103 - 2¹ = 201231101101 is a prime.

It is a super-2 number, since 2×201231101103² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201231101101) 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, 33538516848 + ... + 33538516853.

It is an arithmetic number, because the mean of its divisors is an integer number (67077033702).

Almost surely, 2^201231101103 is an apocalyptic number.

201231101103 is a deficient number, since it is larger than the sum of its proper divisors (67077033705).

201231101103 is an equidigital number, since it uses as much as digits as its factorization.

201231101103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67077033704.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 201231101103 its reverse (301101132102), we get a palindrome (502332233205).

The spelling of 201231101103 in words is "two hundred one billion, two hundred thirty-one million, one hundred one thousand, one hundred three".