340305928531 has 4 divisors (see below), whose sum is σ = 340320975064. Its totient is φ = 340290882000.

The previous prime is 340305928519. The next prime is 340305928541. The reversal of 340305928531 is 135829503043.

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

It is a cyclic number.

It is not a de Polignac number, because 340305928531 - 2¹⁵ = 340305895763 is a prime.

It is a super-2 number, since 2×340305928531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340305928541) 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, 7489290 + ... + 7534591.

It is an arithmetic number, because the mean of its divisors is an integer number (85080243766).

Almost surely, 2^340305928531 is an apocalyptic number.

340305928531 is a deficient number, since it is larger than the sum of its proper divisors (15046533).

340305928531 is a wasteful number, since it uses less digits than its factorization.

340305928531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15046532.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 340305928531 in words is "three hundred forty billion, three hundred five million, nine hundred twenty-eight thousand, five hundred thirty-one".