1215377233 has 12 divisors (see below), whose sum is σ = 1414471872. Its totient is φ = 1041261480.

The previous prime is 1215377203. The next prime is 1215377249. The reversal of 1215377233 is 3327735121.

It is not a de Polignac number, because 1215377233 - 2¹³ = 1215369041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215377203) 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, 132316 + ... + 141202.

It is an arithmetic number, because the mean of its divisors is an integer number (117872656).

Almost surely, 2^1215377233 is an apocalyptic number.

It is an amenable number.

1215377233 is a deficient number, since it is larger than the sum of its proper divisors (199094639).

1215377233 is an equidigital number, since it uses as much as digits as its factorization.

1215377233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11692 (or 11685 counting only the distinct ones).

The product of its digits is 26460, while the sum is 34.

The square root of 1215377233 is about 34862.2608704599. The cubic root of 1215377233 is about 1067.1784142845.

The spelling of 1215377233 in words is "one billion, two hundred fifteen million, three hundred seventy-seven thousand, two hundred thirty-three".