1281031241 has 16 divisors (see below), whose sum is σ = 1477284480. Its totient is φ = 1088119680.

The previous prime is 1281031231. The next prime is 1281031247. The reversal of 1281031241 is 1421301821.

It is a cyclic number.

It is not a de Polignac number, because 1281031241 - 2¹⁴ = 1281014857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1281031247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016870 + ... + 1018128.

It is an arithmetic number, because the mean of its divisors is an integer number (92330280).

Almost surely, 2^1281031241 is an apocalyptic number.

It is an amenable number.

1281031241 is a deficient number, since it is larger than the sum of its proper divisors (196253239).

1281031241 is a wasteful number, since it uses less digits than its factorization.

1281031241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1281031241 is about 35791.4967694842. The cubic root of 1281031241 is about 1086.0585536522.

The spelling of 1281031241 in words is "one billion, two hundred eighty-one million, thirty-one thousand, two hundred forty-one".