340400131 has 2 divisors, whose sum is σ = 340400132. Its totient is φ = 340400130.

The previous prime is 340400113. The next prime is 340400141. The reversal of 340400131 is 131004043.

Together with previous prime (340400113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340400131 - 2¹³ = 340391939 is a prime.

It is a super-2 number, since 2×340400131² = 231744498369634322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340400101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170200065 + 170200066.

It is an arithmetic number, because the mean of its divisors is an integer number (170200066).

Almost surely, 2^340400131 is an apocalyptic number.

340400131 is a deficient number, since it is larger than the sum of its proper divisors (1).

340400131 is an equidigital number, since it uses as much as digits as its factorization.

340400131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 340400131 is about 18449.9357993463. The cubic root of 340400131 is about 698.2268941328.

Adding to 340400131 its reverse (131004043), we get a palindrome (471404174).

The spelling of 340400131 in words is "three hundred forty million, four hundred thousand, one hundred thirty-one".