31223345601 has 32 divisors (see below), whose sum is σ = 50787993600. Its totient is φ = 16664780160.

The previous prime is 31223345591. The next prime is 31223345603. The reversal of 31223345601 is 10654332213.

It is not a de Polignac number, because 31223345601 - 2⁶ = 31223345537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31223345603) 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, 522756 + ... + 579413.

It is an arithmetic number, because the mean of its divisors is an integer number (1587124800).

Almost surely, 2^31223345601 is an apocalyptic number.

It is an amenable number.

31223345601 is a deficient number, since it is larger than the sum of its proper divisors (19564647999).

31223345601 is a wasteful number, since it uses less digits than its factorization.

31223345601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102269.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 31223345601 its reverse (10654332213), we get a palindrome (41877677814).

The spelling of 31223345601 in words is "thirty-one billion, two hundred twenty-three million, three hundred forty-five thousand, six hundred one".