1243345101 has 16 divisors (see below), whose sum is σ = 1715914560. Its totient is φ = 799868160.

The previous prime is 1243345087. The next prime is 1243345111. The reversal of 1243345101 is 1015433421.

It is a happy number.

It is not a de Polignac number, because 1243345101 - 2¹⁰ = 1243344077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243345111) 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, 234981 + ... + 240213.

It is an arithmetic number, because the mean of its divisors is an integer number (107244660).

Almost surely, 2^1243345101 is an apocalyptic number.

It is an amenable number.

1243345101 is a deficient number, since it is larger than the sum of its proper divisors (472569459).

1243345101 is a wasteful number, since it uses less digits than its factorization.

1243345101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7996.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1243345101 is about 35261.0989760671. The cubic root of 1243345101 is about 1075.3022697138.

Adding to 1243345101 its reverse (1015433421), we get a palindrome (2258778522).

The spelling of 1243345101 in words is "one billion, two hundred forty-three million, three hundred forty-five thousand, one hundred one".