31222343401 has 4 divisors (see below), whose sum is σ = 31359886992. Its totient is φ = 31084799812.

The previous prime is 31222343363. The next prime is 31222343443. The reversal of 31222343401 is 10434322213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31222343401 - 2³¹ = 29074859753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31222343461) 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, 68771455 + ... + 68771908.

It is an arithmetic number, because the mean of its divisors is an integer number (7839971748).

Almost surely, 2^31222343401 is an apocalyptic number.

It is an amenable number.

31222343401 is a deficient number, since it is larger than the sum of its proper divisors (137543591).

31222343401 is a wasteful number, since it uses less digits than its factorization.

31222343401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137543590.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31222343401 its reverse (10434322213), we get a palindrome (41656665614).

The spelling of 31222343401 in words is "thirty-one billion, two hundred twenty-two million, three hundred forty-three thousand, four hundred one".