10003121231 has 4 divisors (see below), whose sum is σ = 10003446264. Its totient is φ = 10002796200.

The previous prime is 10003121221. The next prime is 10003121251. The reversal of 10003121231 is 13212130001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13212130001 = 7 ⋅1887447143.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10003121231 is a prime.

It is a super-2 number, since 2×10003121231² (a number of 21 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 (10003121221) 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, 110885 + ... + 179726.

It is an arithmetic number, because the mean of its divisors is an integer number (2500861566).

Almost surely, 2^10003121231 is an apocalyptic number.

10003121231 is a deficient number, since it is larger than the sum of its proper divisors (325033).

10003121231 is an equidigital number, since it uses as much as digits as its factorization.

10003121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325032.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 10003121231 its reverse (13212130001), we get a palindrome (23215251232).

The spelling of 10003121231 in words is "ten billion, three million, one hundred twenty-one thousand, two hundred thirty-one".