1223103731 has 2 divisors, whose sum is σ = 1223103732. Its totient is φ = 1223103730.

The previous prime is 1223103727. The next prime is 1223103773. The reversal of 1223103731 is 1373013221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223103731 - 2² = 1223103727 is a prime.

It is a super-2 number, since 2×1223103731² = 2991965473572240722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1223103697 and 1223103706.

It is not a weakly prime, because it can be changed into another prime (1223103781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611551865 + 611551866.

It is an arithmetic number, because the mean of its divisors is an integer number (611551866).

Almost surely, 2^1223103731 is an apocalyptic number.

1223103731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223103731 is an equidigital number, since it uses as much as digits as its factorization.

1223103731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 1223103731 is about 34972.8999512480. The cubic root of 1223103731 is about 1069.4350909243.

Adding to 1223103731 its reverse (1373013221), we get a palindrome (2596116952).

The spelling of 1223103731 in words is "one billion, two hundred twenty-three million, one hundred three thousand, seven hundred thirty-one".