31311403250041 has 32 divisors (see below), whose sum is σ = 32833342910880. Its totient is φ = 29827513737216.

The previous prime is 31311403249981. The next prime is 31311403250081. The reversal of 31311403250041 is 14005230411313.

It can be written as a sum of positive squares in 16 ways, for example, as 3123490675600 + 28187912574441 = 1767340^2 + 5309229^2 .

It is a cyclic number.

It is not a de Polignac number, because 31311403250041 - 2¹³ = 31311403241849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31311403249991 and 31311403250009.

It is not an unprimeable number, because it can be changed into a prime (31311403250081) 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, 1907246665 + ... + 1907263081.

It is an arithmetic number, because the mean of its divisors is an integer number (1026041965965).

Almost surely, 2^{31311403250041} is an apocalyptic number.

It is an amenable number.

31311403250041 is a deficient number, since it is larger than the sum of its proper divisors (1521939660839).

31311403250041 is a wasteful number, since it uses less digits than its factorization.

31311403250041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18493.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 31311403250041 its reverse (14005230411313), we get a palindrome (45316633661354).

The spelling of 31311403250041 in words is "thirty-one trillion, three hundred eleven billion, four hundred three million, two hundred fifty thousand, forty-one".