10203120331 has 4 divisors (see below), whose sum is σ = 10203538464. Its totient is φ = 10202702200.

The previous prime is 10203120311. The next prime is 10203120341. The reversal of 10203120331 is 13302130201.

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 10203120331 - 2⁷ = 10203120203 is a prime.

It is a super-2 number, since 2×10203120331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10203120311) 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, 170035 + ... + 222076.

It is an arithmetic number, because the mean of its divisors is an integer number (2550884616).

Almost surely, 2^10203120331 is an apocalyptic number.

10203120331 is a deficient number, since it is larger than the sum of its proper divisors (418133).

10203120331 is an equidigital number, since it uses as much as digits as its factorization.

10203120331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418132.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10203120331 its reverse (13302130201), we get a palindrome (23505250532).

The spelling of 10203120331 in words is "ten billion, two hundred three million, one hundred twenty thousand, three hundred thirty-one".