30311031003123 has 32 divisors (see below), whose sum is σ = 45840291481600. Its totient is φ = 17661161431296.

The previous prime is 30311031003103. The next prime is 30311031003131. The reversal of 30311031003123 is 32130013011303.

It is not a de Polignac number, because 30311031003123 - 2¹⁰ = 30311031002099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30311031003123.

It is not an unprimeable number, because it can be changed into a prime (30311031003103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10324090 + ... + 12930927.

It is an arithmetic number, because the mean of its divisors is an integer number (1432509108800).

Almost surely, 2^{30311031003123} is an apocalyptic number.

30311031003123 is a deficient number, since it is larger than the sum of its proper divisors (15529260478477).

30311031003123 is a wasteful number, since it uses less digits than its factorization.

30311031003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23256811.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 30311031003123 its reverse (32130013011303), we get a palindrome (62441044014426).

The spelling of 30311031003123 in words is "thirty trillion, three hundred eleven billion, thirty-one million, three thousand, one hundred twenty-three".