31141120451 has 4 divisors (see below), whose sum is σ = 35589851952. Its totient is φ = 26692388952.

The previous prime is 31141120433. The next prime is 31141120511. The reversal of 31141120451 is 15402114113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15402114113 = 4421 ⋅3483853.

It is a cyclic number.

It is not a de Polignac number, because 31141120451 - 2³⁴ = 13961251267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31141120651) 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, 2224365740 + ... + 2224365753.

It is an arithmetic number, because the mean of its divisors is an integer number (8897462988).

Almost surely, 2^31141120451 is an apocalyptic number.

31141120451 is a deficient number, since it is larger than the sum of its proper divisors (4448731501).

31141120451 is an equidigital number, since it uses as much as digits as its factorization.

31141120451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448731500.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 31141120451 its reverse (15402114113), we get a palindrome (46543234564).

The spelling of 31141120451 in words is "thirty-one billion, one hundred forty-one million, one hundred twenty thousand, four hundred fifty-one".