31123203441 has 32 divisors (see below), whose sum is σ = 50455872000. Its totient is φ = 16818612480.

The previous prime is 31123203431. The next prime is 31123203467. The reversal of 31123203441 is 14430232113.

It is a happy number.

It is not a de Polignac number, because 31123203441 - 2¹⁰ = 31123202417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31123203431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1449291 + ... + 1470608.

It is an arithmetic number, because the mean of its divisors is an integer number (1576746000).

Almost surely, 2^31123203441 is an apocalyptic number.

It is an amenable number.

31123203441 is a deficient number, since it is larger than the sum of its proper divisors (19332668559).

31123203441 is a wasteful number, since it uses less digits than its factorization.

31123203441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919949.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31123203441 its reverse (14430232113), we get a palindrome (45553435554).

The spelling of 31123203441 in words is "thirty-one billion, one hundred twenty-three million, two hundred three thousand, four hundred forty-one".