33102442431 has 12 divisors (see below), whose sum is σ = 48191133952. Its totient is φ = 21894528096.

The previous prime is 33102442427. The next prime is 33102442433. The reversal of 33102442431 is 13424420133.

It is not a de Polignac number, because 33102442431 - 2² = 33102442427 is a prime.

It is a super-2 number, since 2×33102442431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33102442395 and 33102442404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33102442433) 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, 14479366 + ... + 14481651.

Almost surely, 2^33102442431 is an apocalyptic number.

33102442431 is a deficient number, since it is larger than the sum of its proper divisors (15088691521).

33102442431 is a wasteful number, since it uses less digits than its factorization.

33102442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28961150 (or 28961147 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 33102442431 its reverse (13424420133), we get a palindrome (46526862564).

The spelling of 33102442431 in words is "thirty-three billion, one hundred two million, four hundred forty-two thousand, four hundred thirty-one".