137123263 has 4 divisors (see below), whose sum is σ = 143085168. Its totient is φ = 131161360.

The previous prime is 137123237. The next prime is 137123267. The reversal of 137123263 is 362321731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137123263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137123267) 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, 2980918 + ... + 2980963.

It is an arithmetic number, because the mean of its divisors is an integer number (35771292).

Almost surely, 2^137123263 is an apocalyptic number.

137123263 is a deficient number, since it is larger than the sum of its proper divisors (5961905).

137123263 is an equidigital number, since it uses as much as digits as its factorization.

137123263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5961904.

The product of its digits is 4536, while the sum is 28.

The square root of 137123263 is about 11709.9642612606. The cubic root of 137123263 is about 515.6682348956.

Adding to 137123263 its reverse (362321731), we get a palindrome (499444994).

The spelling of 137123263 in words is "one hundred thirty-seven million, one hundred twenty-three thousand, two hundred sixty-three".