31035030401 has 4 divisors (see below), whose sum is σ = 31791982404. Its totient is φ = 30278078400.

The previous prime is 31035030371. The next prime is 31035030409. The reversal of 31035030401 is 10403053013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10403053013 = 4517 ⋅2303089.

It can be written as a sum of positive squares in 2 ways, for example, as 8045193025 + 22989837376 = 89695^2 + 151624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31035030401 is a prime.

It is a super-2 number, since 2×31035030401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31035030409) 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, 378475940 + ... + 378476021.

It is an arithmetic number, because the mean of its divisors is an integer number (7947995601).

Almost surely, 2^31035030401 is an apocalyptic number.

It is an amenable number.

31035030401 is a deficient number, since it is larger than the sum of its proper divisors (756952003).

31035030401 is an equidigital number, since it uses as much as digits as its factorization.

31035030401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756952002.

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 31035030401 its reverse (10403053013), we get a palindrome (41438083414).

The spelling of 31035030401 in words is "thirty-one billion, thirty-five million, thirty thousand, four hundred one".