31142043 has 16 divisors (see below), whose sum is σ = 46452000. Its totient is φ = 20619360.

The previous prime is 31142039. The next prime is 31142077. The reversal of 31142043 is 34024113.

It is not a de Polignac number, because 31142043 - 2² = 31142039 is a prime.

It is a super-3 number, since 3×31142043³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (31142003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153 + ... + 7893.

It is an arithmetic number, because the mean of its divisors is an integer number (2903250).

Almost surely, 2^31142043 is an apocalyptic number.

31142043 is a deficient number, since it is larger than the sum of its proper divisors (15309957).

31142043 is a wasteful number, since it uses less digits than its factorization.

31142043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7899 (or 7893 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 31142043 is about 5580.5056222532. The cubic root of 31142043 is about 314.6171312000.

Adding to 31142043 its reverse (34024113), we get a palindrome (65166156).

The spelling of 31142043 in words is "thirty-one million, one hundred forty-two thousand, forty-three".