1011620723 has 2 divisors, whose sum is σ = 1011620724. Its totient is φ = 1011620722.

The previous prime is 1011620719. The next prime is 1011620759. The reversal of 1011620723 is 3270261101.

It is a weak prime.

It is an emirp because it is prime and its reverse (3270261101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011620723 - 2² = 1011620719 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1011620713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505810361 + 505810362.

It is an arithmetic number, because the mean of its divisors is an integer number (505810362).

Almost surely, 2^1011620723 is an apocalyptic number.

1011620723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011620723 is an equidigital number, since it uses as much as digits as its factorization.

1011620723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1011620723 is about 31805.9856473589. The cubic root of 1011620723 is about 1003.8586658800.

Adding to 1011620723 its reverse (3270261101), we get a palindrome (4281881824).

The spelling of 1011620723 in words is "one billion, eleven million, six hundred twenty thousand, seven hundred twenty-three".