31004331243 has 8 divisors (see below), whose sum is σ = 41342260800. Its totient is φ = 20667977928.

The previous prime is 31004331221. The next prime is 31004331283. The reversal of 31004331243 is 34213340013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31004331243 - 2¹⁰ = 31004330219 is a prime.

It is a super-2 number, since 2×31004331243² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31004331203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347373 + ... + 427406.

It is an arithmetic number, because the mean of its divisors is an integer number (5167782600).

Almost surely, 2^31004331243 is an apocalyptic number.

31004331243 is a deficient number, since it is larger than the sum of its proper divisors (10337929557).

31004331243 is a wasteful number, since it uses less digits than its factorization.

31004331243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788121.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31004331243 its reverse (34213340013), we get a palindrome (65217671256).

The spelling of 31004331243 in words is "thirty-one billion, four million, three hundred thirty-one thousand, two hundred forty-three".