131213029 has 2 divisors, whose sum is σ = 131213030. Its totient is φ = 131213028.

The previous prime is 131213009. The next prime is 131213053. The reversal of 131213029 is 920312131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106193025 + 25020004 = 10305^2 + 5002^2 .

It is a cyclic number.

It is not a de Polignac number, because 131213029 - 2¹⁵ = 131180261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131213009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65606514 + 65606515.

It is an arithmetic number, because the mean of its divisors is an integer number (65606515).

Almost surely, 2^131213029 is an apocalyptic number.

It is an amenable number.

131213029 is a deficient number, since it is larger than the sum of its proper divisors (1).

131213029 is an equidigital number, since it uses as much as digits as its factorization.

131213029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 131213029 is about 11454.8255770221. The cubic root of 131213029 is about 508.1504568601.

It can be divided in two parts, 1312 and 13029, that added together give a palindrome (14341).

The spelling of 131213029 in words is "one hundred thirty-one million, two hundred thirteen thousand, twenty-nine".