340023554531 has 2 divisors, whose sum is σ = 340023554532. Its totient is φ = 340023554530.

The previous prime is 340023554509. The next prime is 340023554539. The reversal of 340023554531 is 135455320043.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340023554531 - 2¹⁸ = 340023292387 is a prime.

It is a super-2 number, since 2×340023554531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340023554491 and 340023554500.

It is not a weakly prime, because it can be changed into another prime (340023554539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170011777265 + 170011777266.

It is an arithmetic number, because the mean of its divisors is an integer number (170011777266).

Almost surely, 2^340023554531 is an apocalyptic number.

340023554531 is a deficient number, since it is larger than the sum of its proper divisors (1).

340023554531 is an equidigital number, since it uses as much as digits as its factorization.

340023554531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 340023554531 its reverse (135455320043), we get a palindrome (475478874574).

The spelling of 340023554531 in words is "three hundred forty billion, twenty-three million, five hundred fifty-four thousand, five hundred thirty-one".