1302123131 has 2 divisors, whose sum is σ = 1302123132. Its totient is φ = 1302123130.

The previous prime is 1302123077. The next prime is 1302123169. The reversal of 1302123131 is 1313212031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1302123131 - 2¹⁴ = 1302106747 is a prime.

It is a super-2 number, since 2×1302123131² = 3391049296570486322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1302123191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651061565 + 651061566.

It is an arithmetic number, because the mean of its divisors is an integer number (651061566).

Almost surely, 2^1302123131 is an apocalyptic number.

1302123131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302123131 is an equidigital number, since it uses as much as digits as its factorization.

1302123131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1302123131 is about 36084.9432727835. The cubic root of 1302123131 is about 1091.9867060756.

Adding to 1302123131 its reverse (1313212031), we get a palindrome (2615335162).

Subtracting 1302123131 from its reverse (1313212031), we obtain a square (11088900 = 3330²).

The spelling of 1302123131 in words is "one billion, three hundred two million, one hundred twenty-three thousand, one hundred thirty-one".