97031642 has 4 divisors (see below), whose sum is σ = 145547466. Its totient is φ = 48515820.

The previous prime is 97031639. The next prime is 97031647. The reversal of 97031642 is 24613079.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24613079 = 41 ⋅600319.

It can be written as a sum of positive squares in only one way, i.e., 74459641 + 22572001 = 8629^2 + 4751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 97031599 and 97031608.

It is not an unprimeable number, because it can be changed into a prime (97031647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24257909 + ... + 24257912.

Almost surely, 2^97031642 is an apocalyptic number.

97031642 is a deficient number, since it is larger than the sum of its proper divisors (48515824).

97031642 is a wasteful number, since it uses less digits than its factorization.

97031642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48515823.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 97031642 is about 9850.4640499826. The cubic root of 97031642 is about 459.5200444509.

The spelling of 97031642 in words is "ninety-seven million, thirty-one thousand, six hundred forty-two".