121040310241531 has 4 divisors (see below), whose sum is σ = 121040626121064. Its totient is φ = 121039994362000.

The previous prime is 121040310241511. The next prime is 121040310241577. The reversal of 121040310241531 is 135142013040121.

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

It is a cyclic number.

It is not a de Polignac number, because 121040310241531 - 2¹⁷ = 121040310110459 is a prime.

It is a super-2 number, since 2×121040310241531² (a number of 29 digits) contains 22 as substring.

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 121040310241531.

It is not an unprimeable number, because it can be changed into a prime (121040310241511) 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, 157364290 + ... + 158131591.

It is an arithmetic number, because the mean of its divisors is an integer number (30260156530266).

Almost surely, 2^{121040310241531} is an apocalyptic number.

121040310241531 is a deficient number, since it is larger than the sum of its proper divisors (315879533).

121040310241531 is an equidigital number, since it uses as much as digits as its factorization.

121040310241531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315879532.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 121040310241531 its reverse (135142013040121), we get a palindrome (256182323281652).

The spelling of 121040310241531 in words is "one hundred twenty-one trillion, forty billion, three hundred ten million, two hundred forty-one thousand, five hundred thirty-one".