30919211845831 has 8 divisors (see below), whose sum is σ = 31684197276144. Its totient is φ = 30154743478080.

The previous prime is 30919211845741. The next prime is 30919211845853. The reversal of 30919211845831 is 13854811291903.

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

It is a cyclic number.

It is not a de Polignac number, because 30919211845831 - 2⁷ = 30919211845703 is a prime.

It is a super-2 number, since 2×30919211845831² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30919211875831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129144565 + ... + 129383758.

It is an arithmetic number, because the mean of its divisors is an integer number (3960524659518).

Almost surely, 2^{30919211845831} is an apocalyptic number.

30919211845831 is a deficient number, since it is larger than the sum of its proper divisors (764985430313).

30919211845831 is a wasteful number, since it uses less digits than its factorization.

30919211845831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258531281.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 30919211845831 in words is "thirty trillion, nine hundred nineteen billion, two hundred eleven million, eight hundred forty-five thousand, eight hundred thirty-one".