1026213723 has 12 divisors (see below), whose sum is σ = 1518463128. Its totient is φ = 667455840.

The previous prime is 1026213697. The next prime is 1026213757. The reversal of 1026213723 is 3273126201.

1026213723 is a `hidden beast` number, since 1 + 0 + 2 + 621 + 37 + 2 + 3 = 666.

It is not a de Polignac number, because 1026213723 - 2²⁴ = 1009436507 is a prime.

It is a super-2 number, since 2×1026213723² = 2106229210547041458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1026113723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1390165 + ... + 1390902.

It is an arithmetic number, because the mean of its divisors is an integer number (126538594).

Almost surely, 2^1026213723 is an apocalyptic number.

1026213723 is a deficient number, since it is larger than the sum of its proper divisors (492249405).

1026213723 is a wasteful number, since it uses less digits than its factorization.

1026213723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781114 (or 2781111 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1026213723 is about 32034.5707478655. The cubic root of 1026213723 is about 1008.6626494845.

Adding to 1026213723 its reverse (3273126201), we get a palindrome (4299339924).

The spelling of 1026213723 in words is "one billion, twenty-six million, two hundred thirteen thousand, seven hundred twenty-three".