31043123 has 4 divisors (see below), whose sum is σ = 32392848. Its totient is φ = 29693400.

The previous prime is 31043101. The next prime is 31043141. The reversal of 31043123 is 32134013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32134013 = 23 ⋅1397131.

It is a cyclic number.

It is not a de Polignac number, because 31043123 - 2¹⁴ = 31026739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31043723) 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, 674828 + ... + 674873.

It is an arithmetic number, because the mean of its divisors is an integer number (8098212).

Almost surely, 2^31043123 is an apocalyptic number.

31043123 is a deficient number, since it is larger than the sum of its proper divisors (1349725).

31043123 is a wasteful number, since it uses less digits than its factorization.

31043123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349724.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 31043123 is about 5571.6355767405. The cubic root of 31043123 is about 314.2836598547.

Adding to 31043123 its reverse (32134013), we get a palindrome (63177136).

The spelling of 31043123 in words is "thirty-one million, forty-three thousand, one hundred twenty-three".