31040221123 has 8 divisors (see below), whose sum is σ = 31561824096. Its totient is φ = 30520963200.

The previous prime is 31040221111. The next prime is 31040221127. The reversal of 31040221123 is 32112204013.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31040221123 - 2⁹ = 31040220611 is a prime.

It is a super-2 number, since 2×31040221123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31040221123.

It is not an unprimeable number, because it can be changed into a prime (31040221127) 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, 559558 + ... + 612523.

It is an arithmetic number, because the mean of its divisors is an integer number (3945228012).

Almost surely, 2^31040221123 is an apocalyptic number.

31040221123 is a deficient number, since it is larger than the sum of its proper divisors (521602973).

31040221123 is a wasteful number, since it uses less digits than its factorization.

31040221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172525.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31040221123 its reverse (32112204013), we get a palindrome (63152425136).

The spelling of 31040221123 in words is "thirty-one billion, forty million, two hundred twenty-one thousand, one hundred twenty-three".