31010403401 has 4 divisors (see below), whose sum is σ = 31207922052. Its totient is φ = 30812884752.

The previous prime is 31010403373. The next prime is 31010403449. The reversal of 31010403401 is 10430401013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23566855225 + 7443548176 = 153515^2 + 86276^2 .

It is a cyclic number.

It is not a de Polignac number, because 31010403401 - 2¹⁰ = 31010402377 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 31010403401.

It is not an unprimeable number, because it can be changed into a prime (31010403301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98759090 + ... + 98759403.

It is an arithmetic number, because the mean of its divisors is an integer number (7801980513).

Almost surely, 2^31010403401 is an apocalyptic number.

It is an amenable number.

31010403401 is a deficient number, since it is larger than the sum of its proper divisors (197518651).

31010403401 is a wasteful number, since it uses less digits than its factorization.

31010403401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197518650.

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

Adding to 31010403401 its reverse (10430401013), we get a palindrome (41440804414).

The spelling of 31010403401 in words is "thirty-one billion, ten million, four hundred three thousand, four hundred one".