103140031 has 2 divisors, whose sum is σ = 103140032. Its totient is φ = 103140030.

The previous prime is 103140029. The next prime is 103140049. The reversal of 103140031 is 130041301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103140031 - 2¹ = 103140029 is a prime.

It is a super-2 number, since 2×103140031² = 21275731989361922, which contains 22 as substring.

Together with 103140029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 103139993 and 103140020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103140431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51570015 + 51570016.

It is an arithmetic number, because the mean of its divisors is an integer number (51570016).

Almost surely, 2^103140031 is an apocalyptic number.

103140031 is a deficient number, since it is larger than the sum of its proper divisors (1).

103140031 is an equidigital number, since it uses as much as digits as its factorization.

103140031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 103140031 is about 10155.7880541098. The cubic root of 103140031 is about 468.9671464205.

Adding to 103140031 its reverse (130041301), we get a palindrome (233181332).

The spelling of 103140031 in words is "one hundred three million, one hundred forty thousand, thirty-one".