1023135626 has 4 divisors (see below), whose sum is σ = 1534703442. Its totient is φ = 511567812.

The previous prime is 1023135613. The next prime is 1023135629. The reversal of 1023135626 is 6265313201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6265313201 = 7 ⋅895044743.

It can be written as a sum of positive squares in only one way, i.e., 549855601 + 473280025 = 23449^2 + 21755^2 .

It is not an unprimeable number, because it can be changed into a prime (1023135629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255783905 + ... + 255783908.

Almost surely, 2^1023135626 is an apocalyptic number.

1023135626 is a deficient number, since it is larger than the sum of its proper divisors (511567816).

1023135626 is an equidigital number, since it uses as much as digits as its factorization.

1023135626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511567815.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1023135626 is about 31986.4913049243. The cubic root of 1023135626 is about 1007.6531551327.

Adding to 1023135626 its reverse (6265313201), we get a palindrome (7288448827).

The spelling of 1023135626 in words is "one billion, twenty-three million, one hundred thirty-five thousand, six hundred twenty-six".