1231106144 has 24 divisors (see below), whose sum is σ = 2507319360. Its totient is φ = 594326656.

The previous prime is 1231106141. The next prime is 1231106179. The reversal of 1231106144 is 4416011321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231106141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662384 + ... + 664239.

It is an arithmetic number, because the mean of its divisors is an integer number (104471640).

Almost surely, 2^1231106144 is an apocalyptic number.

It is an amenable number.

1231106144 is an abundant number, since it is smaller than the sum of its proper divisors (1276213216).

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

1231106144 is a wasteful number, since it uses less digits than its factorization.

1231106144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326662 (or 1326654 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1231106144 is about 35087.1221960422. The cubic root of 1231106144 is about 1071.7623572880.

Adding to 1231106144 its reverse (4416011321), we get a palindrome (5647117465).

The spelling of 1231106144 in words is "one billion, two hundred thirty-one million, one hundred six thousand, one hundred forty-four".