31845119111 has 4 divisors (see below), whose sum is σ = 34294743672. Its totient is φ = 29395494552.

The previous prime is 31845119107. The next prime is 31845119167. The reversal of 31845119111 is 11191154813.

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 31845119111 - 2² = 31845119107 is a prime.

It is a super-2 number, since 2×31845119111² (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 (31845119101) 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, 1224812261 + ... + 1224812286.

It is an arithmetic number, because the mean of its divisors is an integer number (8573685918).

Almost surely, 2^31845119111 is an apocalyptic number.

31845119111 is a deficient number, since it is larger than the sum of its proper divisors (2449624561).

31845119111 is a wasteful number, since it uses less digits than its factorization.

31845119111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449624560.

The product of its digits is 4320, while the sum is 35.

The spelling of 31845119111 in words is "thirty-one billion, eight hundred forty-five million, one hundred nineteen thousand, one hundred eleven".