1023201138 has 64 divisors (see below), whose sum is σ = 2174791680. Its totient is φ = 320276352.

The previous prime is 1023201133. The next prime is 1023201143. The reversal of 1023201138 is 8311023201.

It is an interprime number because it is at equal distance from previous prime (1023201133) and next prime (1023201143).

It is not an unprimeable number, because it can be changed into a prime (1023201131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2787831 + ... + 2788197.

It is an arithmetic number, because the mean of its divisors is an integer number (33981120).

Almost surely, 2^1023201138 is an apocalyptic number.

1023201138 is an abundant number, since it is smaller than the sum of its proper divisors (1151590542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023201138 is a wasteful number, since it uses less digits than its factorization.

1023201138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1023201138 is about 31987.5153458345. The cubic root of 1023201138 is about 1007.6746615564.

Adding to 1023201138 its reverse (8311023201), we get a palindrome (9334224339).

The spelling of 1023201138 in words is "one billion, twenty-three million, two hundred one thousand, one hundred thirty-eight".