304012111021131 has 4 divisors (see below), whose sum is σ = 405349481361512. Its totient is φ = 202674740680752.

The previous prime is 304012111021051. The next prime is 304012111021133. The reversal of 304012111021131 is 131120111210403.

It is a happy number.

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

It is not a de Polignac number, because 304012111021131 - 2⁹ = 304012111020619 is a prime.

It is a super-2 number, since 2×304012111021131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304012111021098 and 304012111021107.

It is not an unprimeable number, because it can be changed into a prime (304012111021133) 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, 50668685170186 + ... + 50668685170191.

It is an arithmetic number, because the mean of its divisors is an integer number (101337370340378).

Almost surely, 2^{304012111021131} is an apocalyptic number.

304012111021131 is a deficient number, since it is larger than the sum of its proper divisors (101337370340381).

304012111021131 is a wasteful number, since it uses less digits than its factorization.

304012111021131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101337370340380.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 304012111021131 its reverse (131120111210403), we get a palindrome (435132222231534).

The spelling of 304012111021131 in words is "three hundred four trillion, twelve billion, one hundred eleven million, twenty-one thousand, one hundred thirty-one".