31024150440121 has 4 divisors (see below), whose sum is σ = 31024174656244. Its totient is φ = 31024126224000.

The previous prime is 31024150440083. The next prime is 31024150440161. The reversal of 31024150440121 is 12104405142013.

It is a happy number.

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 23280731150121 + 7743419290000 = 4825011^2 + 2782700^2 .

It is a cyclic number.

It is not a de Polignac number, because 31024150440121 - 2⁷ = 31024150439993 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 31024150440121.

It is not an unprimeable number, because it can be changed into a prime (31024150440161) 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, 10072260 + ... + 12786661.

It is an arithmetic number, because the mean of its divisors is an integer number (7756043664061).

Almost surely, 2^{31024150440121} is an apocalyptic number.

It is an amenable number.

31024150440121 is a deficient number, since it is larger than the sum of its proper divisors (24216123).

31024150440121 is a wasteful number, since it uses less digits than its factorization.

31024150440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24216122.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 31024150440121 its reverse (12104405142013), we get a palindrome (43128555582134).

The spelling of 31024150440121 in words is "thirty-one trillion, twenty-four billion, one hundred fifty million, four hundred forty thousand, one hundred twenty-one".