31242241123140 has 48 divisors (see below), whose sum is σ = 89842552857792. Its totient is φ = 8106094993536.

The previous prime is 31242241123063. The next prime is 31242241123141. The reversal of 31242241123140 is 4132114224213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 31242241123098 and 31242241123107.

It is not an unprimeable number, because it can be changed into a prime (31242241123141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7036538574 + ... + 7036543013.

It is an arithmetic number, because the mean of its divisors is an integer number (1871719851204).

Almost surely, 2^{31242241123140} is an apocalyptic number.

31242241123140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31242241123140 is an abundant number, since it is smaller than the sum of its proper divisors (58600311734652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31242241123140 is a wasteful number, since it uses less digits than its factorization.

31242241123140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14073081636 (or 14073081634 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 31242241123140 its reverse (4132114224213), we get a palindrome (35374355347353).

The spelling of 31242241123140 in words is "thirty-one trillion, two hundred forty-two billion, two hundred forty-one million, one hundred twenty-three thousand, one hundred forty".