33949774231 has 4 divisors (see below), whose sum is σ = 35946819792. Its totient is φ = 31952728672.

The previous prime is 33949774223. The next prime is 33949774301. The reversal of 33949774231 is 13247794933.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33949774231 - 2³ = 33949774223 is a prime.

It is a super-2 number, since 2×33949774231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33949774211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998522755 + ... + 998522788.

It is an arithmetic number, because the mean of its divisors is an integer number (8986704948).

Almost surely, 2^33949774231 is an apocalyptic number.

33949774231 is a deficient number, since it is larger than the sum of its proper divisors (1997045561).

33949774231 is a wasteful number, since it uses less digits than its factorization.

33949774231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997045560.

The product of its digits is 3429216, while the sum is 52.

The spelling of 33949774231 in words is "thirty-three billion, nine hundred forty-nine million, seven hundred seventy-four thousand, two hundred thirty-one".