1235213001 has 24 divisors (see below), whose sum is σ = 1951757184. Its totient is φ = 746552160.

The previous prime is 1235212997. The next prime is 1235213033. The reversal of 1235213001 is 1003125321.

1235213001 is a `hidden beast` number, since 12 + 352 + 1 + 300 + 1 = 666.

It is not a de Polignac number, because 1235213001 - 2² = 1235212997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1235213051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19335 + ... + 53331.

It is an arithmetic number, because the mean of its divisors is an integer number (81323216).

Almost surely, 2^1235213001 is an apocalyptic number.

1235213001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1235213001 is a deficient number, since it is larger than the sum of its proper divisors (716544183).

1235213001 is a wasteful number, since it uses less digits than its factorization.

1235213001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34381 (or 34378 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1235213001 is about 35145.5971780250. The cubic root of 1235213001 is about 1072.9528014521.

Adding to 1235213001 its reverse (1003125321), we get a palindrome (2238338322).

The spelling of 1235213001 in words is "one billion, two hundred thirty-five million, two hundred thirteen thousand, one".