10203621123431 has 4 divisors (see below), whose sum is σ = 10210614696600. Its totient is φ = 10196627550264.

The previous prime is 10203621123419. The next prime is 10203621123439. The reversal of 10203621123431 is 13432112630201.

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 10203621123431 - 2²² = 10203616929127 is a prime.

It is a super-2 number, since 2×10203621123431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10203621123394 and 10203621123403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203621123439) 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, 3496784396 + ... + 3496787313.

It is an arithmetic number, because the mean of its divisors is an integer number (2552653674150).

Almost surely, 2^{10203621123431} is an apocalyptic number.

10203621123431 is a deficient number, since it is larger than the sum of its proper divisors (6993573169).

10203621123431 is an equidigital number, since it uses as much as digits as its factorization.

10203621123431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993573168.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 10203621123431 its reverse (13432112630201), we get a palindrome (23635733753632).

The spelling of 10203621123431 in words is "ten trillion, two hundred three billion, six hundred twenty-one million, one hundred twenty-three thousand, four hundred thirty-one".