123274485381 has 4 divisors (see below), whose sum is σ = 164365980512. Its totient is φ = 82182990252.

The previous prime is 123274485361. The next prime is 123274485403. The reversal of 123274485381 is 183584472321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183584472321 = 3 ⋅61194824107.

It is not a de Polignac number, because 123274485381 - 2⁹ = 123274484869 is a prime.

It is a super-2 number, since 2×123274485381² (a number of 23 digits) contains 22 as substring.

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 123274485381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123274485361) 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, 20545747561 + ... + 20545747566.

It is an arithmetic number, because the mean of its divisors is an integer number (41091495128).

Almost surely, 2^123274485381 is an apocalyptic number.

It is an amenable number.

123274485381 is a deficient number, since it is larger than the sum of its proper divisors (41091495131).

123274485381 is an equidigital number, since it uses as much as digits as its factorization.

123274485381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41091495130.

The product of its digits is 1290240, while the sum is 48.

The spelling of 123274485381 in words is "one hundred twenty-three billion, two hundred seventy-four million, four hundred eighty-five thousand, three hundred eighty-one".