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122023002131 = 353345674227
BaseRepresentation
bin111000110100100100…
…0110100000000010011
3102122221222210202201022
41301221020310000103
53444400342032011
6132020120230055
711546562255542
oct1615110640023
9378858722638
10122023002131
1147827892608
121b79530b32b
13b678356454
145c97cac159
1532928ad8db
hex1c69234013

122023002131 has 4 divisors (see below), whose sum is σ = 122368676712. Its totient is φ = 121677327552.

The previous prime is 122023002119. The next prime is 122023002139. The reversal of 122023002131 is 131200320221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131200320221 = 193367873937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-122023002131 is a prime.

It is a super-2 number, since 2×1220230021312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122023002139) 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, 172836761 + ... + 172837466.

It is an arithmetic number, because the mean of its divisors is an integer number (30592169178).

Almost surely, 2122023002131 is an apocalyptic number.

122023002131 is a deficient number, since it is larger than the sum of its proper divisors (345674581).

122023002131 is an equidigital number, since it uses as much as digits as its factorization.

122023002131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345674580.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 122023002131 its reverse (131200320221), we get a palindrome (253223322352).

The spelling of 122023002131 in words is "one hundred twenty-two billion, twenty-three million, two thousand, one hundred thirty-one".

Divisors: 1 353 345674227 122023002131