1230213136 has 40 divisors (see below), whose sum is σ = 2408328000. Its totient is φ = 608741760.

The previous prime is 1230213079. The next prime is 1230213137. The reversal of 1230213136 is 6313120321.

It is not an unprimeable number, because it can be changed into a prime (1230213137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788325 + ... + 789883.

It is an arithmetic number, because the mean of its divisors is an integer number (60208200).

Almost surely, 2^1230213136 is an apocalyptic number.

1230213136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1230213136 is a deficient number, since it is larger than the sum of its proper divisors (1178114864).

1230213136 is a wasteful number, since it uses less digits than its factorization.

1230213136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2041 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1230213136 is about 35074.3943069585. The cubic root of 1230213136 is about 1071.5031530288.

Adding to 1230213136 its reverse (6313120321), we get a palindrome (7543333457).

The spelling of 1230213136 in words is "one billion, two hundred thirty million, two hundred thirteen thousand, one hundred thirty-six".