1011215423 has 2 divisors, whose sum is σ = 1011215424. Its totient is φ = 1011215422.

The previous prime is 1011215411. The next prime is 1011215459. The reversal of 1011215423 is 3245121101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011215423 - 2⁴ = 1011215407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011215395 and 1011215404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011215323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505607711 + 505607712.

It is an arithmetic number, because the mean of its divisors is an integer number (505607712).

Almost surely, 2^1011215423 is an apocalyptic number.

1011215423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011215423 is an equidigital number, since it uses as much as digits as its factorization.

1011215423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1011215423 is about 31799.6135668344. The cubic root of 1011215423 is about 1003.7245845799.

Adding to 1011215423 its reverse (3245121101), we get a palindrome (4256336524).

The spelling of 1011215423 in words is "one billion, eleven million, two hundred fifteen thousand, four hundred twenty-three".