340021021031345 has 8 divisors (see below), whose sum is σ = 408228121930560. Its totient is φ = 271881552363120.

The previous prime is 340021021031311. The next prime is 340021021031441. The reversal of 340021021031345 is 543130120120043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340021021031345 - 2⁶ = 340021021031281 is a prime.

It is a super-2 number, since 2×340021021031345² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16908046685 + ... + 16908066794.

It is an arithmetic number, because the mean of its divisors is an integer number (51028515241320).

Almost surely, 2^{340021021031345} is an apocalyptic number.

It is an amenable number.

340021021031345 is a deficient number, since it is larger than the sum of its proper divisors (68207100899215).

340021021031345 is a wasteful number, since it uses less digits than its factorization.

340021021031345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33816115495.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 340021021031345 its reverse (543130120120043), we get a palindrome (883151141151388).

The spelling of 340021021031345 in words is "three hundred forty trillion, twenty-one billion, twenty-one million, thirty-one thousand, three hundred forty-five".