345110021131 has 2 divisors, whose sum is σ = 345110021132. Its totient is φ = 345110021130.

The previous prime is 345110021117. The next prime is 345110021183. The reversal of 345110021131 is 131120011543.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345110021131 - 2¹¹ = 345110019083 is a prime.

It is a super-2 number, since 2×345110021131² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (345110021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172555010565 + 172555010566.

It is an arithmetic number, because the mean of its divisors is an integer number (172555010566).

Almost surely, 2^345110021131 is an apocalyptic number.

345110021131 is a deficient number, since it is larger than the sum of its proper divisors (1).

345110021131 is an equidigital number, since it uses as much as digits as its factorization.

345110021131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 345110021131 its reverse (131120011543), we get a palindrome (476230032674).

The spelling of 345110021131 in words is "three hundred forty-five billion, one hundred ten million, twenty-one thousand, one hundred thirty-one".