31119143 has 12 divisors (see below), whose sum is σ = 35006664. Its totient is φ = 27627600.

The previous prime is 31119119. The next prime is 31119223. The reversal of 31119143 is 34191113.

It is not a de Polignac number, because 31119143 - 2¹² = 31115047 is a prime.

It is a super-3 number, since 3×31119143³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31119113) 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, 2213 + ... + 8193.

It is an arithmetic number, because the mean of its divisors is an integer number (2917222).

Almost surely, 2^31119143 is an apocalyptic number.

31119143 is a deficient number, since it is larger than the sum of its proper divisors (3887521).

31119143 is a wasteful number, since it uses less digits than its factorization.

31119143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046 (or 6035 counting only the distinct ones).

The product of its digits is 324, while the sum is 23.

The square root of 31119143 is about 5578.4534595173. The cubic root of 31119143 is about 314.5399954022.

The spelling of 31119143 in words is "thirty-one million, one hundred nineteen thousand, one hundred forty-three".