1331302123 has 16 divisors (see below), whose sum is σ = 1403297280. Its totient is φ = 1260553536.

The previous prime is 1331302121. The next prime is 1331302153. The reversal of 1331302123 is 3212031331.

It is a cyclic number.

It is not a de Polignac number, because 1331302123 - 2¹ = 1331302121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331302123.

It is not an unprimeable number, because it can be changed into a prime (1331302121) 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, 1178623 + ... + 1179751.

It is an arithmetic number, because the mean of its divisors is an integer number (87706080).

Almost surely, 2^1331302123 is an apocalyptic number.

1331302123 is a deficient number, since it is larger than the sum of its proper divisors (71995157).

1331302123 is a wasteful number, since it uses less digits than its factorization.

1331302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1331302123 is about 36487.0130731470. The cubic root of 1331302123 is about 1100.0832231800.

Adding to 1331302123 its reverse (3212031331), we get a palindrome (4543333454).

The spelling of 1331302123 in words is "one billion, three hundred thirty-one million, three hundred two thousand, one hundred twenty-three".