31021023401 has 8 divisors (see below), whose sum is σ = 31238595360. Its totient is φ = 30803784192.

The previous prime is 31021023389. The next prime is 31021023409. The reversal of 31021023401 is 10432012013.

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 31021023401 - 2¹⁸ = 31020761257 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 31021023401.

It is not an unprimeable number, because it can be changed into a prime (31021023409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105410 + ... + 270468.

It is an arithmetic number, because the mean of its divisors is an integer number (3904824420).

Almost surely, 2^31021023401 is an apocalyptic number.

It is an amenable number.

31021023401 is a deficient number, since it is larger than the sum of its proper divisors (217571959).

31021023401 is a wasteful number, since it uses less digits than its factorization.

31021023401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166375.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31021023401 its reverse (10432012013), we get a palindrome (41453035414).

The spelling of 31021023401 in words is "thirty-one billion, twenty-one million, twenty-three thousand, four hundred one".