121531480031 has 8 divisors (see below), whose sum is σ = 130901798160. Its totient is φ = 112164268032.

The previous prime is 121531480009. The next prime is 121531480043. The reversal of 121531480031 is 130084135121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121531480031 - 2⁶ = 121531479967 is a prime.

It is a super-2 number, since 2×121531480031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121531479976 and 121531480003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121531480531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694946 + ... + 852063.

It is an arithmetic number, because the mean of its divisors is an integer number (16362724770).

Almost surely, 2^121531480031 is an apocalyptic number.

121531480031 is a deficient number, since it is larger than the sum of its proper divisors (9370318129).

121531480031 is a wasteful number, since it uses less digits than its factorization.

121531480031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553065.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 121531480031 in words is "one hundred twenty-one billion, five hundred thirty-one million, four hundred eighty thousand, thirty-one".