31120949 has 8 divisors (see below), whose sum is σ = 32062272. Its totient is φ = 30189600.

The previous prime is 31120937. The next prime is 31120963. The reversal of 31120949 is 94902113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31120949 - 2¹² = 31116853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120049) 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, 4097 + ... + 8889.

It is an arithmetic number, because the mean of its divisors is an integer number (4007784).

Almost surely, 2^31120949 is an apocalyptic number.

It is an amenable number.

31120949 is a deficient number, since it is larger than the sum of its proper divisors (941323).

31120949 is a wasteful number, since it uses less digits than its factorization.

31120949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 31120949 is about 5578.6153299901. The cubic root of 31120949 is about 314.5460800625.

The spelling of 31120949 in words is "thirty-one million, one hundred twenty thousand, nine hundred forty-nine".