103121310021031 has 2 divisors, whose sum is σ = 103121310021032. Its totient is φ = 103121310021030.

The previous prime is 103121310021011. The next prime is 103121310021049. The reversal of 103121310021031 is 130120013121301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 103121310021031 - 2¹⁷ = 103121309889959 is a prime.

It is a super-2 number, since 2×103121310021031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103121310021011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51560655010515 + 51560655010516.

It is an arithmetic number, because the mean of its divisors is an integer number (51560655010516).

Almost surely, 2^{103121310021031} is an apocalyptic number.

103121310021031 is a deficient number, since it is larger than the sum of its proper divisors (1).

103121310021031 is an equidigital number, since it uses as much as digits as its factorization.

103121310021031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 103121310021031 its reverse (130120013121301), we get a palindrome (233241323142332).

The spelling of 103121310021031 in words is "one hundred three trillion, one hundred twenty-one billion, three hundred ten million, twenty-one thousand, thirty-one".